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Finding the Fourth Proportional to 100,101,687.80, 140,444,693.80 and 100,101,687.80

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Solution

The fourth proportional to 100,101,687.80, 140,444,693.80 and 100,101,687.80 is: 140,444,693.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,101,687.80 : 140,444,693.80 = 100,101,687.80 : x
  2. Step 2: Convert to fraction form
    100,101,687.80/140,444,693.80 = 100,101,687.80/x
  3. Step 3: Cross multiply
    100,101,687.80x = 140,444,693.80 × 100,101,687.80
  4. Step 4: Simplify right side
    100,101,687.80x = 14,058,750,891,934,196
  5. Step 5: Solve for x
    x = 14,058,750,891,934,196/100,101,687.80
  6. Step 6: Final answer
    x = 140,444,693.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.