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Finding the Fourth Proportional to 74,607.90, 111,755.72 and 45,010.10

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Solution

The fourth proportional to 74,607.90, 111,755.72 and 45,010.10 is: 67,420.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,607.90 : 111,755.72 = 45,010.10 : x
  2. Step 2: Convert to fraction form
    74,607.90/111,755.72 = 45,010.10/x
  3. Step 3: Cross multiply
    74,607.90x = 111,755.72 × 45,010.10
  4. Step 4: Simplify right side
    74,607.90x = 5,030,136,132.77
  5. Step 5: Solve for x
    x = 5,030,136,132.77/74,607.90
  6. Step 6: Final answer
    x = 67,420.96

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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.