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Finding the Fourth Proportional to 79,315.80, 109,458.84 and 43,507.32

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Solution

The fourth proportional to 79,315.80, 109,458.84 and 43,507.32 is: 60,041.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,315.80 : 109,458.84 = 43,507.32 : x
  2. Step 2: Convert to fraction form
    79,315.80/109,458.84 = 43,507.32/x
  3. Step 3: Cross multiply
    79,315.80x = 109,458.84 × 43,507.32
  4. Step 4: Simplify right side
    79,315.80x = 4,762,260,778.71
  5. Step 5: Solve for x
    x = 4,762,260,778.71/79,315.80
  6. Step 6: Final answer
    x = 60,041.77

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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.