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Finding the Fourth Proportional to 85,798.08, 128,697.12 and 23,469.12

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Solution

The fourth proportional to 85,798.08, 128,697.12 and 23,469.12 is: 35,203.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,798.08 : 128,697.12 = 23,469.12 : x
  2. Step 2: Convert to fraction form
    85,798.08/128,697.12 = 23,469.12/x
  3. Step 3: Cross multiply
    85,798.08x = 128,697.12 × 23,469.12
  4. Step 4: Simplify right side
    85,798.08x = 3,020,408,152.93
  5. Step 5: Solve for x
    x = 3,020,408,152.93/85,798.08
  6. Step 6: Final answer
    x = 35,203.68

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Similar ratio
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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.