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Finding the Fourth Proportional to 191,805.40, 288,036.15 and 125,539.30

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Solution

The fourth proportional to 191,805.40, 288,036.15 and 125,539.30 is: 188,523.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,805.40 : 288,036.15 = 125,539.30 : x
  2. Step 2: Convert to fraction form
    191,805.40/288,036.15 = 125,539.30/x
  3. Step 3: Cross multiply
    191,805.40x = 288,036.15 × 125,539.30
  4. Step 4: Simplify right side
    191,805.40x = 36,159,856,645.70
  5. Step 5: Solve for x
    x = 36,159,856,645.70/191,805.40
  6. Step 6: Final answer
    x = 188,523.66

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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.