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Finding the Fourth Proportional to 218,941.80, 328,412.70 and 183,512.40

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Solution

The fourth proportional to 218,941.80, 328,412.70 and 183,512.40 is: 275,268.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,941.80 : 328,412.70 = 183,512.40 : x
  2. Step 2: Convert to fraction form
    218,941.80/328,412.70 = 183,512.40/x
  3. Step 3: Cross multiply
    218,941.80x = 328,412.70 × 183,512.40
  4. Step 4: Simplify right side
    218,941.80x = 60,267,802,767.48
  5. Step 5: Solve for x
    x = 60,267,802,767.48/218,941.80
  6. Step 6: Final answer
    x = 275,268.60

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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.