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Finding the Fourth Proportional to 127,712.60, 176,257.22 and 70,357.79

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Solution

The fourth proportional to 127,712.60, 176,257.22 and 70,357.79 is: 97,101.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,712.60 : 176,257.22 = 70,357.79 : x
  2. Step 2: Convert to fraction form
    127,712.60/176,257.22 = 70,357.79/x
  3. Step 3: Cross multiply
    127,712.60x = 176,257.22 × 70,357.79
  4. Step 4: Simplify right side
    127,712.60x = 12,401,068,470.74
  5. Step 5: Solve for x
    x = 12,401,068,470.74/127,712.60
  6. Step 6: Final answer
    x = 97,101.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.