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Finding the Fourth Proportional to 72,133.80, 108,200.70 and 59,845.80

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Solution

The fourth proportional to 72,133.80, 108,200.70 and 59,845.80 is: 89,768.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,133.80 : 108,200.70 = 59,845.80 : x
  2. Step 2: Convert to fraction form
    72,133.80/108,200.70 = 59,845.80/x
  3. Step 3: Cross multiply
    72,133.80x = 108,200.70 × 59,845.80
  4. Step 4: Simplify right side
    72,133.80x = 6,475,357,452.06
  5. Step 5: Solve for x
    x = 6,475,357,452.06/72,133.80
  6. Step 6: Final answer
    x = 89,768.70

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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.