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Finding the Fourth Proportional to 369,761.80, 554,642.70 and 355,246.60

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Solution

The fourth proportional to 369,761.80, 554,642.70 and 355,246.60 is: 532,869.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,761.80 : 554,642.70 = 355,246.60 : x
  2. Step 2: Convert to fraction form
    369,761.80/554,642.70 = 355,246.60/x
  3. Step 3: Cross multiply
    369,761.80x = 554,642.70 × 355,246.60
  4. Step 4: Simplify right side
    369,761.80x = 197,034,933,389.82
  5. Step 5: Solve for x
    x = 197,034,933,389.82/369,761.80
  6. Step 6: Final answer
    x = 532,869.90

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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.