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Finding the Fourth Proportional to 124,554.48, 186,831.92 and 99,752.28

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Solution

The fourth proportional to 124,554.48, 186,831.92 and 99,752.28 is: 149,628.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,554.48 : 186,831.92 = 99,752.28 : x
  2. Step 2: Convert to fraction form
    124,554.48/186,831.92 = 99,752.28/x
  3. Step 3: Cross multiply
    124,554.48x = 186,831.92 × 99,752.28
  4. Step 4: Simplify right side
    124,554.48x = 18,636,909,996.78
  5. Step 5: Solve for x
    x = 18,636,909,996.78/124,554.48
  6. Step 6: Final answer
    x = 149,628.58

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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.