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Finding the Fourth Proportional to 537,881.80, 806,822.70 and 369,920.20

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Solution

The fourth proportional to 537,881.80, 806,822.70 and 369,920.20 is: 554,880.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,881.80 : 806,822.70 = 369,920.20 : x
  2. Step 2: Convert to fraction form
    537,881.80/806,822.70 = 369,920.20/x
  3. Step 3: Cross multiply
    537,881.80x = 806,822.70 × 369,920.20
  4. Step 4: Simplify right side
    537,881.80x = 298,460,014,548.54
  5. Step 5: Solve for x
    x = 298,460,014,548.54/537,881.80
  6. Step 6: Final answer
    x = 554,880.30

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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.