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Finding the Fourth Proportional to 1,201,710.72, 1,656,594 and 914,730.96

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Solution

The fourth proportional to 1,201,710.72, 1,656,594 and 914,730.96 is: 1,260,983.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,201,710.72 : 1,656,594 = 914,730.96 : x
  2. Step 2: Convert to fraction form
    1,201,710.72/1,656,594 = 914,730.96/x
  3. Step 3: Cross multiply
    1,201,710.72x = 1,656,594 × 914,730.96
  4. Step 4: Simplify right side
    1,201,710.72x = 1,515,337,819,950.24
  5. Step 5: Solve for x
    x = 1,515,337,819,950.24/1,201,710.72
  6. Step 6: Final answer
    x = 1,260,983.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.