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Finding the Fourth Proportional to 74,502,454.60, 111,753,681.90 and 45,804,640.60

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Solution

The fourth proportional to 74,502,454.60, 111,753,681.90 and 45,804,640.60 is: 68,706,960.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,502,454.60 : 111,753,681.90 = 45,804,640.60 : x
  2. Step 2: Convert to fraction form
    74,502,454.60/111,753,681.90 = 45,804,640.60/x
  3. Step 3: Cross multiply
    74,502,454.60x = 111,753,681.90 × 45,804,640.60
  4. Step 4: Simplify right side
    74,502,454.60x = 5,118,837,235,156,226
  5. Step 5: Solve for x
    x = 5,118,837,235,156,226/74,502,454.60
  6. Step 6: Final answer
    x = 68,706,960.90

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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.