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Finding the Fourth Proportional to 85,708.82, 128,597.03 and 26,549.09

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Solution

The fourth proportional to 85,708.82, 128,597.03 and 26,549.09 is: 39,834.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,708.82 : 128,597.03 = 26,549.09 : x
  2. Step 2: Convert to fraction form
    85,708.82/128,597.03 = 26,549.09/x
  3. Step 3: Cross multiply
    85,708.82x = 128,597.03 × 26,549.09
  4. Step 4: Simplify right side
    85,708.82x = 3,414,134,123.20
  5. Step 5: Solve for x
    x = 3,414,134,123.20/85,708.82
  6. Step 6: Final answer
    x = 39,834.10

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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.