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Finding the Fourth Proportional to 118,373.49, 163,307.05 and 87,402.95

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Solution

The fourth proportional to 118,373.49, 163,307.05 and 87,402.95 is: 120,580.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,373.49 : 163,307.05 = 87,402.95 : x
  2. Step 2: Convert to fraction form
    118,373.49/163,307.05 = 87,402.95/x
  3. Step 3: Cross multiply
    118,373.49x = 163,307.05 × 87,402.95
  4. Step 4: Simplify right side
    118,373.49x = 14,273,517,925.80
  5. Step 5: Solve for x
    x = 14,273,517,925.80/118,373.49
  6. Step 6: Final answer
    x = 120,580.36

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.