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Finding the Fourth Proportional to 19,920,034.40, 29,838,061.20 and 19,920,034.40

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Solution

The fourth proportional to 19,920,034.40, 29,838,061.20 and 19,920,034.40 is: 29,838,061.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920,034.40 : 29,838,061.20 = 19,920,034.40 : x
  2. Step 2: Convert to fraction form
    19,920,034.40/29,838,061.20 = 19,920,034.40/x
  3. Step 3: Cross multiply
    19,920,034.40x = 29,838,061.20 × 19,920,034.40
  4. Step 4: Simplify right side
    19,920,034.40x = 594,375,205,533,305.25
  5. Step 5: Solve for x
    x = 594,375,205,533,305.25/19,920,034.40
  6. Step 6: Final answer
    x = 29,838,061.20

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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.