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Finding the Fourth Proportional to 15,554,777.20, 21,726,299.60 and 15,554,777.20

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Solution

The fourth proportional to 15,554,777.20, 21,726,299.60 and 15,554,777.20 is: 21,726,299.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,554,777.20 : 21,726,299.60 = 15,554,777.20 : x
  2. Step 2: Convert to fraction form
    15,554,777.20/21,726,299.60 = 15,554,777.20/x
  3. Step 3: Cross multiply
    15,554,777.20x = 21,726,299.60 × 15,554,777.20
  4. Step 4: Simplify right side
    15,554,777.20x = 337,947,749,658,449.12
  5. Step 5: Solve for x
    x = 337,947,749,658,449.12/15,554,777.20
  6. Step 6: Final answer
    x = 21,726,299.60

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.