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Finding the Fourth Proportional to 74,456.80, 111,490.80 and 48,018.40

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Solution

The fourth proportional to 74,456.80, 111,490.80 and 48,018.40 is: 71,902.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,456.80 : 111,490.80 = 48,018.40 : x
  2. Step 2: Convert to fraction form
    74,456.80/111,490.80 = 48,018.40/x
  3. Step 3: Cross multiply
    74,456.80x = 111,490.80 × 48,018.40
  4. Step 4: Simplify right side
    74,456.80x = 5,353,609,830.72
  5. Step 5: Solve for x
    x = 5,353,609,830.72/74,456.80
  6. Step 6: Final answer
    x = 71,902.23

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1.5x scale

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.