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Finding the Fourth Proportional to 19,934,461.20, 29,901,691.80 and 19,745,504.40

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Solution

The fourth proportional to 19,934,461.20, 29,901,691.80 and 19,745,504.40 is: 29,618,256.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,934,461.20 : 29,901,691.80 = 19,745,504.40 : x
  2. Step 2: Convert to fraction form
    19,934,461.20/29,901,691.80 = 19,745,504.40/x
  3. Step 3: Cross multiply
    19,934,461.20x = 29,901,691.80 × 19,745,504.40
  4. Step 4: Simplify right side
    19,934,461.20x = 590,423,987,004,343.88
  5. Step 5: Solve for x
    x = 590,423,987,004,343.88/19,934,461.20
  6. Step 6: Final answer
    x = 29,618,256.60

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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.