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Finding the Fourth Proportional to 70,451.77, 97,225.32 and 38,621.86

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Solution

The fourth proportional to 70,451.77, 97,225.32 and 38,621.86 is: 53,299.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,451.77 : 97,225.32 = 38,621.86 : x
  2. Step 2: Convert to fraction form
    70,451.77/97,225.32 = 38,621.86/x
  3. Step 3: Cross multiply
    70,451.77x = 97,225.32 × 38,621.86
  4. Step 4: Simplify right side
    70,451.77x = 3,755,022,697.50
  5. Step 5: Solve for x
    x = 3,755,022,697.50/70,451.77
  6. Step 6: Final answer
    x = 53,299.20

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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.