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Finding the Fourth Proportional to 157,597.17, 217,479.79 and 85,977.17

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Solution

The fourth proportional to 157,597.17, 217,479.79 and 85,977.17 is: 118,646.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,597.17 : 217,479.79 = 85,977.17 : x
  2. Step 2: Convert to fraction form
    157,597.17/217,479.79 = 85,977.17/x
  3. Step 3: Cross multiply
    157,597.17x = 217,479.79 × 85,977.17
  4. Step 4: Simplify right side
    157,597.17x = 18,698,296,876.39
  5. Step 5: Solve for x
    x = 18,698,296,876.39/157,597.17
  6. Step 6: Final answer
    x = 118,646.15

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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.