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Finding the Fourth Proportional to 95,900.40, 143,915.40 and 53,780.40

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Solution

The fourth proportional to 95,900.40, 143,915.40 and 53,780.40 is: 80,706.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,900.40 : 143,915.40 = 53,780.40 : x
  2. Step 2: Convert to fraction form
    95,900.40/143,915.40 = 53,780.40/x
  3. Step 3: Cross multiply
    95,900.40x = 143,915.40 × 53,780.40
  4. Step 4: Simplify right side
    95,900.40x = 7,739,827,778.16
  5. Step 5: Solve for x
    x = 7,739,827,778.16/95,900.40
  6. Step 6: Final answer
    x = 80,706.94

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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.