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Finding the Fourth Proportional to 539,063.10, 809,113.05 and 273,123.90

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Solution

The fourth proportional to 539,063.10, 809,113.05 and 273,123.90 is: 409,948.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,063.10 : 809,113.05 = 273,123.90 : x
  2. Step 2: Convert to fraction form
    539,063.10/809,113.05 = 273,123.90/x
  3. Step 3: Cross multiply
    539,063.10x = 809,113.05 × 273,123.90
  4. Step 4: Simplify right side
    539,063.10x = 220,988,111,756.90
  5. Step 5: Solve for x
    x = 220,988,111,756.90/539,063.10
  6. Step 6: Final answer
    x = 409,948.50

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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.