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Finding the Fourth Proportional to 61,206.40, 91,831.20 and 59,046.40

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Solution

The fourth proportional to 61,206.40, 91,831.20 and 59,046.40 is: 88,590.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,206.40 : 91,831.20 = 59,046.40 : x
  2. Step 2: Convert to fraction form
    61,206.40/91,831.20 = 59,046.40/x
  3. Step 3: Cross multiply
    61,206.40x = 91,831.20 × 59,046.40
  4. Step 4: Simplify right side
    61,206.40x = 5,422,301,767.68
  5. Step 5: Solve for x
    x = 5,422,301,767.68/61,206.40
  6. Step 6: Final answer
    x = 88,590.44

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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.