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Finding the Fourth Proportional to 520,715.52, 781,134.84 and 183,685.86

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Solution

The fourth proportional to 520,715.52, 781,134.84 and 183,685.86 is: 275,550.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,715.52 : 781,134.84 = 183,685.86 : x
  2. Step 2: Convert to fraction form
    520,715.52/781,134.84 = 183,685.86/x
  3. Step 3: Cross multiply
    520,715.52x = 781,134.84 × 183,685.86
  4. Step 4: Simplify right side
    520,715.52x = 143,483,424,861.36
  5. Step 5: Solve for x
    x = 143,483,424,861.36/520,715.52
  6. Step 6: Final answer
    x = 275,550.51

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1.5x scale

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.