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Finding the Fourth Proportional to 191,591.40, 287,387.10 and 132,542.40

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Solution

The fourth proportional to 191,591.40, 287,387.10 and 132,542.40 is: 198,813.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,591.40 : 287,387.10 = 132,542.40 : x
  2. Step 2: Convert to fraction form
    191,591.40/287,387.10 = 132,542.40/x
  3. Step 3: Cross multiply
    191,591.40x = 287,387.10 × 132,542.40
  4. Step 4: Simplify right side
    191,591.40x = 38,090,975,963.04
  5. Step 5: Solve for x
    x = 38,090,975,963.04/191,591.40
  6. Step 6: Final answer
    x = 198,813.60

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1.5x scale

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.