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Finding the Fourth Proportional to 859,524.48, 1,289,520 and 260,461.44

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Solution

The fourth proportional to 859,524.48, 1,289,520 and 260,461.44 is: 390,762.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,524.48 : 1,289,520 = 260,461.44 : x
  2. Step 2: Convert to fraction form
    859,524.48/1,289,520 = 260,461.44/x
  3. Step 3: Cross multiply
    859,524.48x = 1,289,520 × 260,461.44
  4. Step 4: Simplify right side
    859,524.48x = 335,870,236,108.80
  5. Step 5: Solve for x
    x = 335,870,236,108.80/859,524.48
  6. Step 6: Final answer
    x = 390,762.85

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Double scale
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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.