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Finding the Fourth Proportional to 125,831.00, 173,641.67 and 72,078.65

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Solution

The fourth proportional to 125,831.00, 173,641.67 and 72,078.65 is: 99,465.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,831.00 : 173,641.67 = 72,078.65 : x
  2. Step 2: Convert to fraction form
    125,831.00/173,641.67 = 72,078.65/x
  3. Step 3: Cross multiply
    125,831.00x = 173,641.67 × 72,078.65
  4. Step 4: Simplify right side
    125,831.00x = 12,515,855,928.74
  5. Step 5: Solve for x
    x = 12,515,855,928.74/125,831.00
  6. Step 6: Final answer
    x = 99,465.60

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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.