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Finding the Fourth Proportional to 157,605.40, 217,487.46 and 85,984.84

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Solution

The fourth proportional to 157,605.40, 217,487.46 and 85,984.84 is: 118,654.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,605.40 : 217,487.46 = 85,984.84 : x
  2. Step 2: Convert to fraction form
    157,605.40/217,487.46 = 85,984.84/x
  3. Step 3: Cross multiply
    157,605.40x = 217,487.46 × 85,984.84
  4. Step 4: Simplify right side
    157,605.40x = 18,700,624,450.11
  5. Step 5: Solve for x
    x = 18,700,624,450.11/157,605.40
  6. Step 6: Final answer
    x = 118,654.72

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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.