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Finding the Fourth Proportional to 226,680.47, 312,806.68 and 124,689.47

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Solution

The fourth proportional to 226,680.47, 312,806.68 and 124,689.47 is: 172,064.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,680.47 : 312,806.68 = 124,689.47 : x
  2. Step 2: Convert to fraction form
    226,680.47/312,806.68 = 124,689.47/x
  3. Step 3: Cross multiply
    226,680.47x = 312,806.68 × 124,689.47
  4. Step 4: Simplify right side
    226,680.47x = 39,003,699,141.66
  5. Step 5: Solve for x
    x = 39,003,699,141.66/226,680.47
  6. Step 6: Final answer
    x = 172,064.67

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1.5x scale

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.