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Finding the Fourth Proportional to 43,657.38, 65,490.90 and 15,583.98

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Solution

The fourth proportional to 43,657.38, 65,490.90 and 15,583.98 is: 23,377.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,657.38 : 65,490.90 = 15,583.98 : x
  2. Step 2: Convert to fraction form
    43,657.38/65,490.90 = 15,583.98/x
  3. Step 3: Cross multiply
    43,657.38x = 65,490.90 × 15,583.98
  4. Step 4: Simplify right side
    43,657.38x = 1,020,608,875.78
  5. Step 5: Solve for x
    x = 1,020,608,875.78/43,657.38
  6. Step 6: Final answer
    x = 23,377.69

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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.