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Finding the Fourth Proportional to 83,394.16, 115,073.40 and 66,441.40

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Solution

The fourth proportional to 83,394.16, 115,073.40 and 66,441.40 is: 91,680.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,394.16 : 115,073.40 = 66,441.40 : x
  2. Step 2: Convert to fraction form
    83,394.16/115,073.40 = 66,441.40/x
  3. Step 3: Cross multiply
    83,394.16x = 115,073.40 × 66,441.40
  4. Step 4: Simplify right side
    83,394.16x = 7,645,637,798.76
  5. Step 5: Solve for x
    x = 7,645,637,798.76/83,394.16
  6. Step 6: Final answer
    x = 91,680.73

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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.