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Finding the Fourth Proportional to 168,546,839.80, 252,820,259.70 and 86,551,398.40

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Solution

The fourth proportional to 168,546,839.80, 252,820,259.70 and 86,551,398.40 is: 129,827,097.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,546,839.80 : 252,820,259.70 = 86,551,398.40 : x
  2. Step 2: Convert to fraction form
    168,546,839.80/252,820,259.70 = 86,551,398.40/x
  3. Step 3: Cross multiply
    168,546,839.80x = 252,820,259.70 × 86,551,398.40
  4. Step 4: Simplify right side
    168,546,839.80x = 21,881,947,020,886,164
  5. Step 5: Solve for x
    x = 21,881,947,020,886,164/168,546,839.80
  6. Step 6: Final answer
    x = 129,827,097.60

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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.