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Finding the Fourth Proportional to 91,658.56, 126,392.88 and 67,835.20

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Solution

The fourth proportional to 91,658.56, 126,392.88 and 67,835.20 is: 93,541.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,658.56 : 126,392.88 = 67,835.20 : x
  2. Step 2: Convert to fraction form
    91,658.56/126,392.88 = 67,835.20/x
  3. Step 3: Cross multiply
    91,658.56x = 126,392.88 × 67,835.20
  4. Step 4: Simplify right side
    91,658.56x = 8,573,886,293.38
  5. Step 5: Solve for x
    x = 8,573,886,293.38/91,658.56
  6. Step 6: Final answer
    x = 93,541.58

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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.