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Finding the Fourth Proportional to 261,930.60, 393,068.70 and 95,718.60

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Solution

The fourth proportional to 261,930.60, 393,068.70 and 95,718.60 is: 143,641.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,930.60 : 393,068.70 = 95,718.60 : x
  2. Step 2: Convert to fraction form
    261,930.60/393,068.70 = 95,718.60/x
  3. Step 3: Cross multiply
    261,930.60x = 393,068.70 × 95,718.60
  4. Step 4: Simplify right side
    261,930.60x = 37,623,985,667.82
  5. Step 5: Solve for x
    x = 37,623,985,667.82/261,930.60
  6. Step 6: Final answer
    x = 143,641.05

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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.