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Finding the Fourth Proportional to 79,368.15, 109,531.20 and 43,559.46

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Solution

The fourth proportional to 79,368.15, 109,531.20 and 43,559.46 is: 60,113.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,368.15 : 109,531.20 = 43,559.46 : x
  2. Step 2: Convert to fraction form
    79,368.15/109,531.20 = 43,559.46/x
  3. Step 3: Cross multiply
    79,368.15x = 109,531.20 × 43,559.46
  4. Step 4: Simplify right side
    79,368.15x = 4,771,119,925.15
  5. Step 5: Solve for x
    x = 4,771,119,925.15/79,368.15
  6. Step 6: Final answer
    x = 60,113.79

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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.