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Finding the Fourth Proportional to 61,887.76, 85,407.02 and 36,389.52

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Solution

The fourth proportional to 61,887.76, 85,407.02 and 36,389.52 is: 50,218.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,887.76 : 85,407.02 = 36,389.52 : x
  2. Step 2: Convert to fraction form
    61,887.76/85,407.02 = 36,389.52/x
  3. Step 3: Cross multiply
    61,887.76x = 85,407.02 × 36,389.52
  4. Step 4: Simplify right side
    61,887.76x = 3,107,920,462.43
  5. Step 5: Solve for x
    x = 3,107,920,462.43/61,887.76
  6. Step 6: Final answer
    x = 50,218.66

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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.