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Finding the Fourth Proportional to 128,153.91, 192,272.01 and 61,598.88

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Solution

The fourth proportional to 128,153.91, 192,272.01 and 61,598.88 is: 92,418.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,153.91 : 192,272.01 = 61,598.88 : x
  2. Step 2: Convert to fraction form
    128,153.91/192,272.01 = 61,598.88/x
  3. Step 3: Cross multiply
    128,153.91x = 192,272.01 × 61,598.88
  4. Step 4: Simplify right side
    128,153.91x = 11,843,740,471.35
  5. Step 5: Solve for x
    x = 11,843,740,471.35/128,153.91
  6. Step 6: Final answer
    x = 92,418.10

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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.