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Finding the Fourth Proportional to 95,639.46, 131,980.67 and 65,423.76

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Solution

The fourth proportional to 95,639.46, 131,980.67 and 65,423.76 is: 90,283.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,639.46 : 131,980.67 = 65,423.76 : x
  2. Step 2: Convert to fraction form
    95,639.46/131,980.67 = 65,423.76/x
  3. Step 3: Cross multiply
    95,639.46x = 131,980.67 × 65,423.76
  4. Step 4: Simplify right side
    95,639.46x = 8,634,671,678.72
  5. Step 5: Solve for x
    x = 8,634,671,678.72/95,639.46
  6. Step 6: Final answer
    x = 90,283.57

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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.