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Finding the Fourth Proportional to 58,688.76, 80,990.52 and 31,831.26

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Solution

The fourth proportional to 58,688.76, 80,990.52 and 31,831.26 is: 43,927.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,688.76 : 80,990.52 = 31,831.26 : x
  2. Step 2: Convert to fraction form
    58,688.76/80,990.52 = 31,831.26/x
  3. Step 3: Cross multiply
    58,688.76x = 80,990.52 × 31,831.26
  4. Step 4: Simplify right side
    58,688.76x = 2,578,029,894.70
  5. Step 5: Solve for x
    x = 2,578,029,894.70/58,688.76
  6. Step 6: Final answer
    x = 43,927.15

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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.