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Finding the Fourth Proportional to 338,397.18, 507,640.76 and 158,458.03

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Solution

The fourth proportional to 338,397.18, 507,640.76 and 158,458.03 is: 237,708.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,397.18 : 507,640.76 = 158,458.03 : x
  2. Step 2: Convert to fraction form
    338,397.18/507,640.76 = 158,458.03/x
  3. Step 3: Cross multiply
    338,397.18x = 507,640.76 × 158,458.03
  4. Step 4: Simplify right side
    338,397.18x = 80,439,754,777.30
  5. Step 5: Solve for x
    x = 80,439,754,777.30/338,397.18
  6. Step 6: Final answer
    x = 237,708.11

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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.