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Finding the Fourth Proportional to 181,627,751.80, 272,441,627.70 and 127,101,905.20

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Solution

The fourth proportional to 181,627,751.80, 272,441,627.70 and 127,101,905.20 is: 190,652,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,627,751.80 : 272,441,627.70 = 127,101,905.20 : x
  2. Step 2: Convert to fraction form
    181,627,751.80/272,441,627.70 = 127,101,905.20/x
  3. Step 3: Cross multiply
    181,627,751.80x = 272,441,627.70 × 127,101,905.20
  4. Step 4: Simplify right side
    181,627,751.80x = 34,627,849,936,459,092
  5. Step 5: Solve for x
    x = 34,627,849,936,459,092/181,627,751.80
  6. Step 6: Final answer
    x = 190,652,857.80

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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.