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Finding the Fourth Proportional to 191,240.12, 286,857.84 and 85,984.76

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Solution

The fourth proportional to 191,240.12, 286,857.84 and 85,984.76 is: 128,976.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,240.12 : 286,857.84 = 85,984.76 : x
  2. Step 2: Convert to fraction form
    191,240.12/286,857.84 = 85,984.76/x
  3. Step 3: Cross multiply
    191,240.12x = 286,857.84 × 85,984.76
  4. Step 4: Simplify right side
    191,240.12x = 24,665,402,526.52
  5. Step 5: Solve for x
    x = 24,665,402,526.52/191,240.12
  6. Step 6: Final answer
    x = 128,976.09

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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.