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Finding the Fourth Proportional to 127,658.71, 191,354.95 and 71,416.36

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Solution

The fourth proportional to 127,658.71, 191,354.95 and 71,416.36 is: 107,050.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,658.71 : 191,354.95 = 71,416.36 : x
  2. Step 2: Convert to fraction form
    127,658.71/191,354.95 = 71,416.36/x
  3. Step 3: Cross multiply
    127,658.71x = 191,354.95 × 71,416.36
  4. Step 4: Simplify right side
    127,658.71x = 13,665,873,996.98
  5. Step 5: Solve for x
    x = 13,665,873,996.98/127,658.71
  6. Step 6: Final answer
    x = 107,050.07

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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.