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Finding the Fourth Proportional to 74,703.60, 111,925.80 and 48,394.80

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Solution

The fourth proportional to 74,703.60, 111,925.80 and 48,394.80 is: 72,508.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,703.60 : 111,925.80 = 48,394.80 : x
  2. Step 2: Convert to fraction form
    74,703.60/111,925.80 = 48,394.80/x
  3. Step 3: Cross multiply
    74,703.60x = 111,925.80 × 48,394.80
  4. Step 4: Simplify right side
    74,703.60x = 5,416,626,705.84
  5. Step 5: Solve for x
    x = 5,416,626,705.84/74,703.60
  6. Step 6: Final answer
    x = 72,508.24

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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.