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Finding the Fourth Proportional to 139,187.97, 208,764.95 and 59,258.18

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Solution

The fourth proportional to 139,187.97, 208,764.95 and 59,258.18 is: 88,880.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,187.97 : 208,764.95 = 59,258.18 : x
  2. Step 2: Convert to fraction form
    139,187.97/208,764.95 = 59,258.18/x
  3. Step 3: Cross multiply
    139,187.97x = 208,764.95 × 59,258.18
  4. Step 4: Simplify right side
    139,187.97x = 12,371,031,210.41
  5. Step 5: Solve for x
    x = 12,371,031,210.41/139,187.97
  6. Step 6: Final answer
    x = 88,880.03

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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.