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Finding the Fourth Proportional to 157,475.59, 217,316.17 and 85,855.60

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Solution

The fourth proportional to 157,475.59, 217,316.17 and 85,855.60 is: 118,480.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,475.59 : 217,316.17 = 85,855.60 : x
  2. Step 2: Convert to fraction form
    157,475.59/217,316.17 = 85,855.60/x
  3. Step 3: Cross multiply
    157,475.59x = 217,316.17 × 85,855.60
  4. Step 4: Simplify right side
    157,475.59x = 18,657,808,838.68
  5. Step 5: Solve for x
    x = 18,657,808,838.68/157,475.59
  6. Step 6: Final answer
    x = 118,480.64

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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.