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Finding the Fourth Proportional to 191,008.62, 286,414.50 and 85,737.36

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Solution

The fourth proportional to 191,008.62, 286,414.50 and 85,737.36 is: 128,561.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,008.62 : 286,414.50 = 85,737.36 : x
  2. Step 2: Convert to fraction form
    191,008.62/286,414.50 = 85,737.36/x
  3. Step 3: Cross multiply
    191,008.62x = 286,414.50 × 85,737.36
  4. Step 4: Simplify right side
    191,008.62x = 24,556,423,095.72
  5. Step 5: Solve for x
    x = 24,556,423,095.72/191,008.62
  6. Step 6: Final answer
    x = 128,561.86

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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.