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Finding the Fourth Proportional to 405,017.40, 606,359.70 and 247,553.40

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Solution

The fourth proportional to 405,017.40, 606,359.70 and 247,553.40 is: 370,617.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,017.40 : 606,359.70 = 247,553.40 : x
  2. Step 2: Convert to fraction form
    405,017.40/606,359.70 = 247,553.40/x
  3. Step 3: Cross multiply
    405,017.40x = 606,359.70 × 247,553.40
  4. Step 4: Simplify right side
    405,017.40x = 150,106,405,357.98
  5. Step 5: Solve for x
    x = 150,106,405,357.98/405,017.40
  6. Step 6: Final answer
    x = 370,617.18

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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.