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Finding the Fourth Proportional to 123,622,605, 185,429,331 and 49,878,277.20

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Solution

The fourth proportional to 123,622,605, 185,429,331 and 49,878,277.20 is: 74,815,569.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,622,605 : 185,429,331 = 49,878,277.20 : x
  2. Step 2: Convert to fraction form
    123,622,605/185,429,331 = 49,878,277.20/x
  3. Step 3: Cross multiply
    123,622,605x = 185,429,331 × 49,878,277.20
  4. Step 4: Simplify right side
    123,622,605x = 9,248,895,572,628,554
  5. Step 5: Solve for x
    x = 9,248,895,572,628,554/123,622,605
  6. Step 6: Final answer
    x = 74,815,569.31

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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.