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Finding the Fourth Proportional to 70,960.64, 97,924.32 and 39,132.48

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Solution

The fourth proportional to 70,960.64, 97,924.32 and 39,132.48 is: 54,002.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,960.64 : 97,924.32 = 39,132.48 : x
  2. Step 2: Convert to fraction form
    70,960.64/97,924.32 = 39,132.48/x
  3. Step 3: Cross multiply
    70,960.64x = 97,924.32 × 39,132.48
  4. Step 4: Simplify right side
    70,960.64x = 3,832,021,493.91
  5. Step 5: Solve for x
    x = 3,832,021,493.91/70,960.64
  6. Step 6: Final answer
    x = 54,002.07

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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.