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Finding the Fourth Proportional to 177,213,978.80, 265,632,011.40 and 67,996,948.40

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Solution

The fourth proportional to 177,213,978.80, 265,632,011.40 and 67,996,948.40 is: 101,922,919.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,213,978.80 : 265,632,011.40 = 67,996,948.40 : x
  2. Step 2: Convert to fraction form
    177,213,978.80/265,632,011.40 = 67,996,948.40/x
  3. Step 3: Cross multiply
    177,213,978.80x = 265,632,011.40 × 67,996,948.40
  4. Step 4: Simplify right side
    177,213,978.80x = 18,062,166,172,554,012
  5. Step 5: Solve for x
    x = 18,062,166,172,554,012/177,213,978.80
  6. Step 6: Final answer
    x = 101,922,919.93

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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.