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Finding the Fourth Proportional to 191,125.70, 286,615.65 and 57,961.70

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Solution

The fourth proportional to 191,125.70, 286,615.65 and 57,961.70 is: 86,920.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,125.70 : 286,615.65 = 57,961.70 : x
  2. Step 2: Convert to fraction form
    191,125.70/286,615.65 = 57,961.70/x
  3. Step 3: Cross multiply
    191,125.70x = 286,615.65 × 57,961.70
  4. Step 4: Simplify right side
    191,125.70x = 16,612,730,320.61
  5. Step 5: Solve for x
    x = 16,612,730,320.61/191,125.70
  6. Step 6: Final answer
    x = 86,920.44

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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.