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Finding the Fourth Proportional to 123,922,894.80, 185,902,056.90 and 42,045,551.40

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Solution

The fourth proportional to 123,922,894.80, 185,902,056.90 and 42,045,551.40 is: 63,074,337.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,922,894.80 : 185,902,056.90 = 42,045,551.40 : x
  2. Step 2: Convert to fraction form
    123,922,894.80/185,902,056.90 = 42,045,551.40/x
  3. Step 3: Cross multiply
    123,922,894.80x = 185,902,056.90 × 42,045,551.40
  4. Step 4: Simplify right side
    123,922,894.80x = 7,816,354,488,754,675
  5. Step 5: Solve for x
    x = 7,816,354,488,754,675/123,922,894.80
  6. Step 6: Final answer
    x = 63,074,337.49

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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.