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Finding the Fourth Proportional to 191,685.60, 287,543.28 and 65,286.88

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Solution

The fourth proportional to 191,685.60, 287,543.28 and 65,286.88 is: 97,935.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,685.60 : 287,543.28 = 65,286.88 : x
  2. Step 2: Convert to fraction form
    191,685.60/287,543.28 = 65,286.88/x
  3. Step 3: Cross multiply
    191,685.60x = 287,543.28 × 65,286.88
  4. Step 4: Simplify right side
    191,685.60x = 18,772,803,616.17
  5. Step 5: Solve for x
    x = 18,772,803,616.17/191,685.60
  6. Step 6: Final answer
    x = 97,935.39

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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.