Home / 127,520,188.38-176,001,542.55-72,512,764.38

Finding the Fourth Proportional to 127,520,188.38, 176,001,542.55 and 72,512,764.38

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Solution

The fourth proportional to 127,520,188.38, 176,001,542.55 and 72,512,764.38 is: 100,081,081.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,520,188.38 : 176,001,542.55 = 72,512,764.38 : x
  2. Step 2: Convert to fraction form
    127,520,188.38/176,001,542.55 = 72,512,764.38/x
  3. Step 3: Cross multiply
    127,520,188.38x = 176,001,542.55 × 72,512,764.38
  4. Step 4: Simplify right side
    127,520,188.38x = 12,762,358,385,444,694
  5. Step 5: Solve for x
    x = 12,762,358,385,444,694/127,520,188.38
  6. Step 6: Final answer
    x = 100,081,081.65

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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.