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Finding the Fourth Proportional to 5,147,695.91, 7,721,598.95 and 1,553,495.06

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Solution

The fourth proportional to 5,147,695.91, 7,721,598.95 and 1,553,495.06 is: 2,330,259.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147,695.91 : 7,721,598.95 = 1,553,495.06 : x
  2. Step 2: Convert to fraction form
    5,147,695.91/7,721,598.95 = 1,553,495.06/x
  3. Step 3: Cross multiply
    5,147,695.91x = 7,721,598.95 × 1,553,495.06
  4. Step 4: Simplify right side
    5,147,695.91x = 11,995,465,777,750.72
  5. Step 5: Solve for x
    x = 11,995,465,777,750.72/5,147,695.91
  6. Step 6: Final answer
    x = 2,330,259.21

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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.