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Finding the Fourth Proportional to 560,820.78, 773,903.57 and 319,098.42

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Solution

The fourth proportional to 560,820.78, 773,903.57 and 319,098.42 is: 440,339.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,820.78 : 773,903.57 = 319,098.42 : x
  2. Step 2: Convert to fraction form
    560,820.78/773,903.57 = 319,098.42/x
  3. Step 3: Cross multiply
    560,820.78x = 773,903.57 × 319,098.42
  4. Step 4: Simplify right side
    560,820.78x = 246,951,406,020.49
  5. Step 5: Solve for x
    x = 246,951,406,020.49/560,820.78
  6. Step 6: Final answer
    x = 440,339.26

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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.