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Finding the Fourth Proportional to 318,671.72, 478,036.38 and 94,031.72

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Solution

The fourth proportional to 318,671.72, 478,036.38 and 94,031.72 is: 141,056.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,671.72 : 478,036.38 = 94,031.72 : x
  2. Step 2: Convert to fraction form
    318,671.72/478,036.38 = 94,031.72/x
  3. Step 3: Cross multiply
    318,671.72x = 478,036.38 × 94,031.72
  4. Step 4: Simplify right side
    318,671.72x = 44,950,583,033.97
  5. Step 5: Solve for x
    x = 44,950,583,033.97/318,671.72
  6. Step 6: Final answer
    x = 141,056.08

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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.