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Finding the Fourth Proportional to 52,590.70, 78,886.05 and 48,289.90

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Solution

The fourth proportional to 52,590.70, 78,886.05 and 48,289.90 is: 72,434.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,590.70 : 78,886.05 = 48,289.90 : x
  2. Step 2: Convert to fraction form
    52,590.70/78,886.05 = 48,289.90/x
  3. Step 3: Cross multiply
    52,590.70x = 78,886.05 × 48,289.90
  4. Step 4: Simplify right side
    52,590.70x = 3,809,399,465.90
  5. Step 5: Solve for x
    x = 3,809,399,465.90/52,590.70
  6. Step 6: Final answer
    x = 72,434.85

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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.