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Finding the Fourth Proportional to 72,442.20, 108,533.70 and 62,074.20

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Solution

The fourth proportional to 72,442.20, 108,533.70 and 62,074.20 is: 93,000.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,442.20 : 108,533.70 = 62,074.20 : x
  2. Step 2: Convert to fraction form
    72,442.20/108,533.70 = 62,074.20/x
  3. Step 3: Cross multiply
    72,442.20x = 108,533.70 × 62,074.20
  4. Step 4: Simplify right side
    72,442.20x = 6,737,142,600.54
  5. Step 5: Solve for x
    x = 6,737,142,600.54/72,442.20
  6. Step 6: Final answer
    x = 93,000.25

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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.