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Finding the Fourth Proportional to 85,792.13, 128,697.11 and 23,462.63

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Solution

The fourth proportional to 85,792.13, 128,697.11 and 23,462.63 is: 35,196.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,792.13 : 128,697.11 = 23,462.63 : x
  2. Step 2: Convert to fraction form
    85,792.13/128,697.11 = 23,462.63/x
  3. Step 3: Cross multiply
    85,792.13x = 128,697.11 × 23,462.63
  4. Step 4: Simplify right side
    85,792.13x = 3,019,571,913.20
  5. Step 5: Solve for x
    x = 3,019,571,913.20/85,792.13
  6. Step 6: Final answer
    x = 35,196.38

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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.