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Finding the Fourth Proportional to 324,332.40, 486,061.20 and 217,412.40

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Solution

The fourth proportional to 324,332.40, 486,061.20 and 217,412.40 is: 325,825.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,332.40 : 486,061.20 = 217,412.40 : x
  2. Step 2: Convert to fraction form
    324,332.40/486,061.20 = 217,412.40/x
  3. Step 3: Cross multiply
    324,332.40x = 486,061.20 × 217,412.40
  4. Step 4: Simplify right side
    324,332.40x = 105,675,732,038.88
  5. Step 5: Solve for x
    x = 105,675,732,038.88/324,332.40
  6. Step 6: Final answer
    x = 325,825.39

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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.