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Finding the Fourth Proportional to 84,498.66, 126,760.50 and 28,325.34

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Solution

The fourth proportional to 84,498.66, 126,760.50 and 28,325.34 is: 42,492.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,498.66 : 126,760.50 = 28,325.34 : x
  2. Step 2: Convert to fraction form
    84,498.66/126,760.50 = 28,325.34/x
  3. Step 3: Cross multiply
    84,498.66x = 126,760.50 × 28,325.34
  4. Step 4: Simplify right side
    84,498.66x = 3,590,534,261.07
  5. Step 5: Solve for x
    x = 3,590,534,261.07/84,498.66
  6. Step 6: Final answer
    x = 42,492.20

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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.