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Finding the Fourth Proportional to 132,078.60, 198,117.90 and 117,644.40

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Solution

The fourth proportional to 132,078.60, 198,117.90 and 117,644.40 is: 176,466.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,078.60 : 198,117.90 = 117,644.40 : x
  2. Step 2: Convert to fraction form
    132,078.60/198,117.90 = 117,644.40/x
  3. Step 3: Cross multiply
    132,078.60x = 198,117.90 × 117,644.40
  4. Step 4: Simplify right side
    132,078.60x = 23,307,461,474.76
  5. Step 5: Solve for x
    x = 23,307,461,474.76/132,078.60
  6. Step 6: Final answer
    x = 176,466.60

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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.