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Finding the Fourth Proportional to 235,078.17, 352,641.85 and 77,318.92

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Solution

The fourth proportional to 235,078.17, 352,641.85 and 77,318.92 is: 115,986.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,078.17 : 352,641.85 = 77,318.92 : x
  2. Step 2: Convert to fraction form
    235,078.17/352,641.85 = 77,318.92/x
  3. Step 3: Cross multiply
    235,078.17x = 352,641.85 × 77,318.92
  4. Step 4: Simplify right side
    235,078.17x = 27,265,886,988.80
  5. Step 5: Solve for x
    x = 27,265,886,988.80/235,078.17
  6. Step 6: Final answer
    x = 115,986.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.