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Finding the Fourth Proportional to 238,153.50, 357,230.25 and 71,941.50

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Solution

The fourth proportional to 238,153.50, 357,230.25 and 71,941.50 is: 107,912.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,153.50 : 357,230.25 = 71,941.50 : x
  2. Step 2: Convert to fraction form
    238,153.50/357,230.25 = 71,941.50/x
  3. Step 3: Cross multiply
    238,153.50x = 357,230.25 × 71,941.50
  4. Step 4: Simplify right side
    238,153.50x = 25,699,680,030.38
  5. Step 5: Solve for x
    x = 25,699,680,030.38/238,153.50
  6. Step 6: Final answer
    x = 107,912.25

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Double scale
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Similar ratio
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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.