Home / 20,358,754,977.90-30,538,132,466.85-18,889,426,901.10

Finding the Fourth Proportional to 20,358,754,977.90, 30,538,132,466.85 and 18,889,426,901.10

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Solution

The fourth proportional to 20,358,754,977.90, 30,538,132,466.85 and 18,889,426,901.10 is: 28,334,140,351.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,358,754,977.90 : 30,538,132,466.85 = 18,889,426,901.10 : x
  2. Step 2: Convert to fraction form
    20,358,754,977.90/30,538,132,466.85 = 18,889,426,901.10/x
  3. Step 3: Cross multiply
    20,358,754,977.90x = 30,538,132,466.85 × 18,889,426,901.10
  4. Step 4: Simplify right side
    20,358,754,977.90x = 576,847,820,928,671,612,928
  5. Step 5: Solve for x
    x = 576,847,820,928,671,612,928/20,358,754,977.90
  6. Step 6: Final answer
    x = 28,334,140,351.65

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.