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Finding the Fourth Proportional to 520,839.92, 781,334.72 and 161,038.83

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Solution

The fourth proportional to 520,839.92, 781,334.72 and 161,038.83 is: 241,581.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,839.92 : 781,334.72 = 161,038.83 : x
  2. Step 2: Convert to fraction form
    520,839.92/781,334.72 = 161,038.83/x
  3. Step 3: Cross multiply
    520,839.92x = 781,334.72 × 161,038.83
  4. Step 4: Simplify right side
    520,839.92x = 125,825,232,102.35
  5. Step 5: Solve for x
    x = 125,825,232,102.35/520,839.92
  6. Step 6: Final answer
    x = 241,581.39

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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.