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Finding the Fourth Proportional to 520,716.52, 781,136.34 and 183,686.86

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Solution

The fourth proportional to 520,716.52, 781,136.34 and 183,686.86 is: 275,552.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,716.52 : 781,136.34 = 183,686.86 : x
  2. Step 2: Convert to fraction form
    520,716.52/781,136.34 = 183,686.86/x
  3. Step 3: Cross multiply
    520,716.52x = 781,136.34 × 183,686.86
  4. Step 4: Simplify right side
    520,716.52x = 143,484,481,526.49
  5. Step 5: Solve for x
    x = 143,484,481,526.49/520,716.52
  6. Step 6: Final answer
    x = 275,552.01

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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.