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Finding the Fourth Proportional to 79,318.16, 109,462.13 and 43,509.68

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Solution

The fourth proportional to 79,318.16, 109,462.13 and 43,509.68 is: 60,045.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,318.16 : 109,462.13 = 43,509.68 : x
  2. Step 2: Convert to fraction form
    79,318.16/109,462.13 = 43,509.68/x
  3. Step 3: Cross multiply
    79,318.16x = 109,462.13 × 43,509.68
  4. Step 4: Simplify right side
    79,318.16x = 4,762,661,483.56
  5. Step 5: Solve for x
    x = 4,762,661,483.56/79,318.16
  6. Step 6: Final answer
    x = 60,045.04

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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.