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Finding the Fourth Proportional to 88,191.73, 121,706.78 and 47,905.48

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Solution

The fourth proportional to 88,191.73, 121,706.78 and 47,905.48 is: 66,110.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,191.73 : 121,706.78 = 47,905.48 : x
  2. Step 2: Convert to fraction form
    88,191.73/121,706.78 = 47,905.48/x
  3. Step 3: Cross multiply
    88,191.73x = 121,706.78 × 47,905.48
  4. Step 4: Simplify right side
    88,191.73x = 5,830,421,715.15
  5. Step 5: Solve for x
    x = 5,830,421,715.15/88,191.73
  6. Step 6: Final answer
    x = 66,110.75

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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.