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Finding the Fourth Proportional to 157,889.08, 217,884.42 and 86,267.56

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Solution

The fourth proportional to 157,889.08, 217,884.42 and 86,267.56 is: 119,047.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,889.08 : 217,884.42 = 86,267.56 : x
  2. Step 2: Convert to fraction form
    157,889.08/217,884.42 = 86,267.56/x
  3. Step 3: Cross multiply
    157,889.08x = 217,884.42 × 86,267.56
  4. Step 4: Simplify right side
    157,889.08x = 18,796,357,275.42
  5. Step 5: Solve for x
    x = 18,796,357,275.42/157,889.08
  6. Step 6: Final answer
    x = 119,047.86

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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.