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Finding the Fourth Proportional to 125,809.80, 173,597.76 and 72,084.48

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Solution

The fourth proportional to 125,809.80, 173,597.76 and 72,084.48 is: 99,465.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,809.80 : 173,597.76 = 72,084.48 : x
  2. Step 2: Convert to fraction form
    125,809.80/173,597.76 = 72,084.48/x
  3. Step 3: Cross multiply
    125,809.80x = 173,597.76 × 72,084.48
  4. Step 4: Simplify right side
    125,809.80x = 12,513,704,258.76
  5. Step 5: Solve for x
    x = 12,513,704,258.76/125,809.80
  6. Step 6: Final answer
    x = 99,465.26

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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.