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Finding the Fourth Proportional to 404,155.80, 606,233.70 and 262,438.20

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Solution

The fourth proportional to 404,155.80, 606,233.70 and 262,438.20 is: 393,657.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,155.80 : 606,233.70 = 262,438.20 : x
  2. Step 2: Convert to fraction form
    404,155.80/606,233.70 = 262,438.20/x
  3. Step 3: Cross multiply
    404,155.80x = 606,233.70 × 262,438.20
  4. Step 4: Simplify right side
    404,155.80x = 159,098,881,007.34
  5. Step 5: Solve for x
    x = 159,098,881,007.34/404,155.80
  6. Step 6: Final answer
    x = 393,657.30

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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.