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Finding the Fourth Proportional to 124,018.81, 170,842.18 and 89,927.11

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Solution

The fourth proportional to 124,018.81, 170,842.18 and 89,927.11 is: 123,879.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,018.81 : 170,842.18 = 89,927.11 : x
  2. Step 2: Convert to fraction form
    124,018.81/170,842.18 = 89,927.11/x
  3. Step 3: Cross multiply
    124,018.81x = 170,842.18 × 89,927.11
  4. Step 4: Simplify right side
    124,018.81x = 15,363,343,513.50
  5. Step 5: Solve for x
    x = 15,363,343,513.50/124,018.81
  6. Step 6: Final answer
    x = 123,879.14

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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.