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Finding the Fourth Proportional to 318,780.67, 478,058.45 and 94,081

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Solution

The fourth proportional to 318,780.67, 478,058.45 and 94,081 is: 141,088.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,780.67 : 478,058.45 = 94,081 : x
  2. Step 2: Convert to fraction form
    318,780.67/478,058.45 = 94,081/x
  3. Step 3: Cross multiply
    318,780.67x = 478,058.45 × 94,081
  4. Step 4: Simplify right side
    318,780.67x = 44,976,217,034.45
  5. Step 5: Solve for x
    x = 44,976,217,034.45/318,780.67
  6. Step 6: Final answer
    x = 141,088.28

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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.