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Finding the Fourth Proportional to 72,859.68, 109,149.30 and 44,697.50

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Solution

The fourth proportional to 72,859.68, 109,149.30 and 44,697.50 is: 66,960.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,859.68 : 109,149.30 = 44,697.50 : x
  2. Step 2: Convert to fraction form
    72,859.68/109,149.30 = 44,697.50/x
  3. Step 3: Cross multiply
    72,859.68x = 109,149.30 × 44,697.50
  4. Step 4: Simplify right side
    72,859.68x = 4,878,700,267.62
  5. Step 5: Solve for x
    x = 4,878,700,267.62/72,859.68
  6. Step 6: Final answer
    x = 66,960.22

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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.