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Finding the Fourth Proportional to 543,237.80, 814,856.70 and 520,201.40

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Solution

The fourth proportional to 543,237.80, 814,856.70 and 520,201.40 is: 780,302.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,237.80 : 814,856.70 = 520,201.40 : x
  2. Step 2: Convert to fraction form
    543,237.80/814,856.70 = 520,201.40/x
  3. Step 3: Cross multiply
    543,237.80x = 814,856.70 × 520,201.40
  4. Step 4: Simplify right side
    543,237.80x = 423,889,596,139.38
  5. Step 5: Solve for x
    x = 423,889,596,139.38/543,237.80
  6. Step 6: Final answer
    x = 780,302.10

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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.