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Finding the Fourth Proportional to 157,657.40, 217,567.98 and 86,038.92

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Solution

The fourth proportional to 157,657.40, 217,567.98 and 86,038.92 is: 118,734.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,657.40 : 217,567.98 = 86,038.92 : x
  2. Step 2: Convert to fraction form
    157,657.40/217,567.98 = 86,038.92/x
  3. Step 3: Cross multiply
    157,657.40x = 217,567.98 × 86,038.92
  4. Step 4: Simplify right side
    157,657.40x = 18,719,314,025.78
  5. Step 5: Solve for x
    x = 18,719,314,025.78/157,657.40
  6. Step 6: Final answer
    x = 118,734.13

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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.