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Finding the Fourth Proportional to 91,285.65, 136,928.54 and 59,722.23

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Solution

The fourth proportional to 91,285.65, 136,928.54 and 59,722.23 is: 89,583.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,285.65 : 136,928.54 = 59,722.23 : x
  2. Step 2: Convert to fraction form
    91,285.65/136,928.54 = 59,722.23/x
  3. Step 3: Cross multiply
    91,285.65x = 136,928.54 × 59,722.23
  4. Step 4: Simplify right side
    91,285.65x = 8,177,677,759.44
  5. Step 5: Solve for x
    x = 8,177,677,759.44/91,285.65
  6. Step 6: Final answer
    x = 89,583.39

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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.