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Finding the Fourth Proportional to 85,324.81, 127,887.57 and 64,196.98

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Solution

The fourth proportional to 85,324.81, 127,887.57 and 64,196.98 is: 96,220.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,324.81 : 127,887.57 = 64,196.98 : x
  2. Step 2: Convert to fraction form
    85,324.81/127,887.57 = 64,196.98/x
  3. Step 3: Cross multiply
    85,324.81x = 127,887.57 × 64,196.98
  4. Step 4: Simplify right side
    85,324.81x = 8,209,995,773.54
  5. Step 5: Solve for x
    x = 8,209,995,773.54/85,324.81
  6. Step 6: Final answer
    x = 96,220.50

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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.