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Finding the Fourth Proportional to 144,861, 217,165.92 and 56,053.40

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Solution

The fourth proportional to 144,861, 217,165.92 and 56,053.40 is: 84,031.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,861 : 217,165.92 = 56,053.40 : x
  2. Step 2: Convert to fraction form
    144,861/217,165.92 = 56,053.40/x
  3. Step 3: Cross multiply
    144,861x = 217,165.92 × 56,053.40
  4. Step 4: Simplify right side
    144,861x = 12,172,888,180.13
  5. Step 5: Solve for x
    x = 12,172,888,180.13/144,861
  6. Step 6: Final answer
    x = 84,031.51

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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.