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Finding the Fourth Proportional to 318,718.68, 477,966.59 and 94,019.45

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Solution

The fourth proportional to 318,718.68, 477,966.59 and 94,019.45 is: 140,996.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,718.68 : 477,966.59 = 94,019.45 : x
  2. Step 2: Convert to fraction form
    318,718.68/477,966.59 = 94,019.45/x
  3. Step 3: Cross multiply
    318,718.68x = 477,966.59 × 94,019.45
  4. Step 4: Simplify right side
    318,718.68x = 44,938,153,050.25
  5. Step 5: Solve for x
    x = 44,938,153,050.25/318,718.68
  6. Step 6: Final answer
    x = 140,996.30

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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.