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Finding the Fourth Proportional to 124,481.76, 186,722.58 and 45,602.16

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Solution

The fourth proportional to 124,481.76, 186,722.58 and 45,602.16 is: 68,403.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,481.76 : 186,722.58 = 45,602.16 : x
  2. Step 2: Convert to fraction form
    124,481.76/186,722.58 = 45,602.16/x
  3. Step 3: Cross multiply
    124,481.76x = 186,722.58 × 45,602.16
  4. Step 4: Simplify right side
    124,481.76x = 8,514,952,968.77
  5. Step 5: Solve for x
    x = 8,514,952,968.77/124,481.76
  6. Step 6: Final answer
    x = 68,403.22

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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.