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Finding the Fourth Proportional to 9,165,387.20, 13,748,080.80 and 9,165,387.20

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Solution

The fourth proportional to 9,165,387.20, 13,748,080.80 and 9,165,387.20 is: 13,748,080.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,165,387.20 : 13,748,080.80 = 9,165,387.20 : x
  2. Step 2: Convert to fraction form
    9,165,387.20/13,748,080.80 = 9,165,387.20/x
  3. Step 3: Cross multiply
    9,165,387.20x = 13,748,080.80 × 9,165,387.20
  4. Step 4: Simplify right side
    9,165,387.20x = 126,006,483,788,885.75
  5. Step 5: Solve for x
    x = 126,006,483,788,885.75/9,165,387.20
  6. Step 6: Final answer
    x = 13,748,080.80

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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.