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Finding the Fourth Proportional to 274,097.40, 411,146.10 and 155,999.40

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Solution

The fourth proportional to 274,097.40, 411,146.10 and 155,999.40 is: 233,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,097.40 : 411,146.10 = 155,999.40 : x
  2. Step 2: Convert to fraction form
    274,097.40/411,146.10 = 155,999.40/x
  3. Step 3: Cross multiply
    274,097.40x = 411,146.10 × 155,999.40
  4. Step 4: Simplify right side
    274,097.40x = 64,138,544,912.34
  5. Step 5: Solve for x
    x = 64,138,544,912.34/274,097.40
  6. Step 6: Final answer
    x = 233,999.10

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1.5x scale

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.