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Finding the Fourth Proportional to 157,678.65, 217,597.14 and 86,060.25

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Solution

The fourth proportional to 157,678.65, 217,597.14 and 86,060.25 is: 118,763.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,678.65 : 217,597.14 = 86,060.25 : x
  2. Step 2: Convert to fraction form
    157,678.65/217,597.14 = 86,060.25/x
  3. Step 3: Cross multiply
    157,678.65x = 217,597.14 × 86,060.25
  4. Step 4: Simplify right side
    157,678.65x = 18,726,464,267.69
  5. Step 5: Solve for x
    x = 18,726,464,267.69/157,678.65
  6. Step 6: Final answer
    x = 118,763.47

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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.