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Finding the Fourth Proportional to 86,004.70, 128,897.70 and 41,535.70

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Solution

The fourth proportional to 86,004.70, 128,897.70 and 41,535.70 is: 62,250.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,004.70 : 128,897.70 = 41,535.70 : x
  2. Step 2: Convert to fraction form
    86,004.70/128,897.70 = 41,535.70/x
  3. Step 3: Cross multiply
    86,004.70x = 128,897.70 × 41,535.70
  4. Step 4: Simplify right side
    86,004.70x = 5,353,856,197.89
  5. Step 5: Solve for x
    x = 5,353,856,197.89/86,004.70
  6. Step 6: Final answer
    x = 62,250.74

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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.