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Finding the Fourth Proportional to 187,151.92, 280,751.64 and 85,925.32

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Solution

The fourth proportional to 187,151.92, 280,751.64 and 85,925.32 is: 128,898.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,151.92 : 280,751.64 = 85,925.32 : x
  2. Step 2: Convert to fraction form
    187,151.92/280,751.64 = 85,925.32/x
  3. Step 3: Cross multiply
    187,151.92x = 280,751.64 × 85,925.32
  4. Step 4: Simplify right side
    187,151.92x = 24,123,674,507.52
  5. Step 5: Solve for x
    x = 24,123,674,507.52/187,151.92
  6. Step 6: Final answer
    x = 128,898.89

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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.