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Finding the Fourth Proportional to 91,352.77, 136,684.62 and 53,933.20

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Solution

The fourth proportional to 91,352.77, 136,684.62 and 53,933.20 is: 80,696.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,352.77 : 136,684.62 = 53,933.20 : x
  2. Step 2: Convert to fraction form
    91,352.77/136,684.62 = 53,933.20/x
  3. Step 3: Cross multiply
    91,352.77x = 136,684.62 × 53,933.20
  4. Step 4: Simplify right side
    91,352.77x = 7,371,838,947.38
  5. Step 5: Solve for x
    x = 7,371,838,947.38/91,352.77
  6. Step 6: Final answer
    x = 80,696.39

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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.