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Finding the Fourth Proportional to 70,687.50, 97,499.70 and 48,013.80

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Solution

The fourth proportional to 70,687.50, 97,499.70 and 48,013.80 is: 66,225.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,687.50 : 97,499.70 = 48,013.80 : x
  2. Step 2: Convert to fraction form
    70,687.50/97,499.70 = 48,013.80/x
  3. Step 3: Cross multiply
    70,687.50x = 97,499.70 × 48,013.80
  4. Step 4: Simplify right side
    70,687.50x = 4,681,331,095.86
  5. Step 5: Solve for x
    x = 4,681,331,095.86/70,687.50
  6. Step 6: Final answer
    x = 66,225.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.