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Finding the Fourth Proportional to 148,915.40, 223,373.10 and 89,866.40

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Solution

The fourth proportional to 148,915.40, 223,373.10 and 89,866.40 is: 134,799.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,915.40 : 223,373.10 = 89,866.40 : x
  2. Step 2: Convert to fraction form
    148,915.40/223,373.10 = 89,866.40/x
  3. Step 3: Cross multiply
    148,915.40x = 223,373.10 × 89,866.40
  4. Step 4: Simplify right side
    148,915.40x = 20,073,736,353.84
  5. Step 5: Solve for x
    x = 20,073,736,353.84/148,915.40
  6. Step 6: Final answer
    x = 134,799.60

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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.