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Finding the Fourth Proportional to 500,881.50, 691,260.24 and 274,570.74

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Solution

The fourth proportional to 500,881.50, 691,260.24 and 274,570.74 is: 378,931.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,881.50 : 691,260.24 = 274,570.74 : x
  2. Step 2: Convert to fraction form
    500,881.50/691,260.24 = 274,570.74/x
  3. Step 3: Cross multiply
    500,881.50x = 691,260.24 × 274,570.74
  4. Step 4: Simplify right side
    500,881.50x = 189,799,835,629.38
  5. Step 5: Solve for x
    x = 189,799,835,629.38/500,881.50
  6. Step 6: Final answer
    x = 378,931.61

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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.