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Finding the Fourth Proportional to 85,792.53, 128,546.54 and 60,708.24

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Solution

The fourth proportional to 85,792.53, 128,546.54 and 60,708.24 is: 90,961.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,792.53 : 128,546.54 = 60,708.24 : x
  2. Step 2: Convert to fraction form
    85,792.53/128,546.54 = 60,708.24/x
  3. Step 3: Cross multiply
    85,792.53x = 128,546.54 × 60,708.24
  4. Step 4: Simplify right side
    85,792.53x = 7,803,833,897.95
  5. Step 5: Solve for x
    x = 7,803,833,897.95/85,792.53
  6. Step 6: Final answer
    x = 90,961.69

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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.