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Finding the Fourth Proportional to 157,590.55, 217,475.47 and 85,972.07

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Solution

The fourth proportional to 157,590.55, 217,475.47 and 85,972.07 is: 118,641.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,590.55 : 217,475.47 = 85,972.07 : x
  2. Step 2: Convert to fraction form
    157,590.55/217,475.47 = 85,972.07/x
  3. Step 3: Cross multiply
    157,590.55x = 217,475.47 × 85,972.07
  4. Step 4: Simplify right side
    157,590.55x = 18,696,816,658.88
  5. Step 5: Solve for x
    x = 18,696,816,658.88/157,590.55
  6. Step 6: Final answer
    x = 118,641.74

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1.5x scale

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.