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Finding the Fourth Proportional to 79,299.48, 109,438.32 and 52,394.80

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Solution

The fourth proportional to 79,299.48, 109,438.32 and 52,394.80 is: 72,308.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,299.48 : 109,438.32 = 52,394.80 : x
  2. Step 2: Convert to fraction form
    79,299.48/109,438.32 = 52,394.80/x
  3. Step 3: Cross multiply
    79,299.48x = 109,438.32 × 52,394.80
  4. Step 4: Simplify right side
    79,299.48x = 5,733,998,888.74
  5. Step 5: Solve for x
    x = 5,733,998,888.74/79,299.48
  6. Step 6: Final answer
    x = 72,308.15

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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.