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Finding the Fourth Proportional to 20,852,969.40, 31,279,454.10 and 20,852,969.40

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Solution

The fourth proportional to 20,852,969.40, 31,279,454.10 and 20,852,969.40 is: 31,279,454.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852,969.40 : 31,279,454.10 = 20,852,969.40 : x
  2. Step 2: Convert to fraction form
    20,852,969.40/31,279,454.10 = 20,852,969.40/x
  3. Step 3: Cross multiply
    20,852,969.40x = 31,279,454.10 × 20,852,969.40
  4. Step 4: Simplify right side
    20,852,969.40x = 652,269,499,196,004.50
  5. Step 5: Solve for x
    x = 652,269,499,196,004.50/20,852,969.40
  6. Step 6: Final answer
    x = 31,279,454.10

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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.