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Finding the Fourth Proportional to 528,065.42, 791,781.76 and 168,080.76

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Solution

The fourth proportional to 528,065.42, 791,781.76 and 168,080.76 is: 252,020.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,065.42 : 791,781.76 = 168,080.76 : x
  2. Step 2: Convert to fraction form
    528,065.42/791,781.76 = 168,080.76/x
  3. Step 3: Cross multiply
    528,065.42x = 791,781.76 × 168,080.76
  4. Step 4: Simplify right side
    528,065.42x = 133,083,279,554.74
  5. Step 5: Solve for x
    x = 133,083,279,554.74/528,065.42
  6. Step 6: Final answer
    x = 252,020.44

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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.