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Finding the Fourth Proportional to 127,599.79, 191,358.95 and 42,194.81

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Solution

The fourth proportional to 127,599.79, 191,358.95 and 42,194.81 is: 63,278.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,599.79 : 191,358.95 = 42,194.81 : x
  2. Step 2: Convert to fraction form
    127,599.79/191,358.95 = 42,194.81/x
  3. Step 3: Cross multiply
    127,599.79x = 191,358.95 × 42,194.81
  4. Step 4: Simplify right side
    127,599.79x = 8,074,355,120.93
  5. Step 5: Solve for x
    x = 8,074,355,120.93/127,599.79
  6. Step 6: Final answer
    x = 63,278.75

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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.