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Finding the Fourth Proportional to 191,387.60, 287,081.40 and 58,266.80

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Solution

The fourth proportional to 191,387.60, 287,081.40 and 58,266.80 is: 87,400.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,387.60 : 287,081.40 = 58,266.80 : x
  2. Step 2: Convert to fraction form
    191,387.60/287,081.40 = 58,266.80/x
  3. Step 3: Cross multiply
    191,387.60x = 287,081.40 × 58,266.80
  4. Step 4: Simplify right side
    191,387.60x = 16,727,314,517.52
  5. Step 5: Solve for x
    x = 16,727,314,517.52/191,387.60
  6. Step 6: Final answer
    x = 87,400.20

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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.