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Finding the Fourth Proportional to 191,865.48, 287,798.76 and 67,177.32

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Solution

The fourth proportional to 191,865.48, 287,798.76 and 67,177.32 is: 100,766.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,865.48 : 287,798.76 = 67,177.32 : x
  2. Step 2: Convert to fraction form
    191,865.48/287,798.76 = 67,177.32/x
  3. Step 3: Cross multiply
    191,865.48x = 287,798.76 × 67,177.32
  4. Step 4: Simplify right side
    191,865.48x = 19,333,549,396.12
  5. Step 5: Solve for x
    x = 19,333,549,396.12/191,865.48
  6. Step 6: Final answer
    x = 100,766.17

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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.