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Finding the Fourth Proportional to 319,062.70, 478,507.65 and 94,422.70

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Solution

The fourth proportional to 319,062.70, 478,507.65 and 94,422.70 is: 141,608.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,062.70 : 478,507.65 = 94,422.70 : x
  2. Step 2: Convert to fraction form
    319,062.70/478,507.65 = 94,422.70/x
  3. Step 3: Cross multiply
    319,062.70x = 478,507.65 × 94,422.70
  4. Step 4: Simplify right side
    319,062.70x = 45,181,984,283.66
  5. Step 5: Solve for x
    x = 45,181,984,283.66/319,062.70
  6. Step 6: Final answer
    x = 141,608.48

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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.