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Finding the Fourth Proportional to 191,452.65, 287,179.04 and 86,148.60

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Solution

The fourth proportional to 191,452.65, 287,179.04 and 86,148.60 is: 129,222.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,452.65 : 287,179.04 = 86,148.60 : x
  2. Step 2: Convert to fraction form
    191,452.65/287,179.04 = 86,148.60/x
  3. Step 3: Cross multiply
    191,452.65x = 287,179.04 × 86,148.60
  4. Step 4: Simplify right side
    191,452.65x = 24,740,071,419.71
  5. Step 5: Solve for x
    x = 24,740,071,419.71/191,452.65
  6. Step 6: Final answer
    x = 129,222.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.