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Finding the Fourth Proportional to 127,357.60, 191,036.40 and 115,110.40

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Solution

The fourth proportional to 127,357.60, 191,036.40 and 115,110.40 is: 172,665.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,357.60 : 191,036.40 = 115,110.40 : x
  2. Step 2: Convert to fraction form
    127,357.60/191,036.40 = 115,110.40/x
  3. Step 3: Cross multiply
    127,357.60x = 191,036.40 × 115,110.40
  4. Step 4: Simplify right side
    127,357.60x = 21,990,276,418.56
  5. Step 5: Solve for x
    x = 21,990,276,418.56/127,357.60
  6. Step 6: Final answer
    x = 172,665.60

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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.