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Finding the Fourth Proportional to 127,560.60, 191,486.70 and 74,999.70

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Solution

The fourth proportional to 127,560.60, 191,486.70 and 74,999.70 is: 112,585.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,560.60 : 191,486.70 = 74,999.70 : x
  2. Step 2: Convert to fraction form
    127,560.60/191,486.70 = 74,999.70/x
  3. Step 3: Cross multiply
    127,560.60x = 191,486.70 × 74,999.70
  4. Step 4: Simplify right side
    127,560.60x = 14,361,445,053.99
  5. Step 5: Solve for x
    x = 14,361,445,053.99/127,560.60
  6. Step 6: Final answer
    x = 112,585.27

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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.