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Finding the Fourth Proportional to 74,428.60, 111,642.90 and 44,904.10

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Solution

The fourth proportional to 74,428.60, 111,642.90 and 44,904.10 is: 67,356.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,428.60 : 111,642.90 = 44,904.10 : x
  2. Step 2: Convert to fraction form
    74,428.60/111,642.90 = 44,904.10/x
  3. Step 3: Cross multiply
    74,428.60x = 111,642.90 × 44,904.10
  4. Step 4: Simplify right side
    74,428.60x = 5,013,223,945.89
  5. Step 5: Solve for x
    x = 5,013,223,945.89/74,428.60
  6. Step 6: Final answer
    x = 67,356.15

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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.