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Finding the Fourth Proportional to 125,970.39, 173,831.16 and 69,381.77

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Solution

The fourth proportional to 125,970.39, 173,831.16 and 69,381.77 is: 95,742.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,970.39 : 173,831.16 = 69,381.77 : x
  2. Step 2: Convert to fraction form
    125,970.39/173,831.16 = 69,381.77/x
  3. Step 3: Cross multiply
    125,970.39x = 173,831.16 × 69,381.77
  4. Step 4: Simplify right side
    125,970.39x = 12,060,712,692.80
  5. Step 5: Solve for x
    x = 12,060,712,692.80/125,970.39
  6. Step 6: Final answer
    x = 95,742.44

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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.