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Finding the Fourth Proportional to 26,605.96, 39,831.72 and 15,478.72

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Solution

The fourth proportional to 26,605.96, 39,831.72 and 15,478.72 is: 23,173.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,605.96 : 39,831.72 = 15,478.72 : x
  2. Step 2: Convert to fraction form
    26,605.96/39,831.72 = 15,478.72/x
  3. Step 3: Cross multiply
    26,605.96x = 39,831.72 × 15,478.72
  4. Step 4: Simplify right side
    26,605.96x = 616,544,041.00
  5. Step 5: Solve for x
    x = 616,544,041.00/26,605.96
  6. Step 6: Final answer
    x = 23,173.16

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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.