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Finding the Fourth Proportional to 886,572.80, 1,329,859.20 and 325,534.40

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Solution

The fourth proportional to 886,572.80, 1,329,859.20 and 325,534.40 is: 488,301.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,572.80 : 1,329,859.20 = 325,534.40 : x
  2. Step 2: Convert to fraction form
    886,572.80/1,329,859.20 = 325,534.40/x
  3. Step 3: Cross multiply
    886,572.80x = 1,329,859.20 × 325,534.40
  4. Step 4: Simplify right side
    886,572.80x = 432,914,916,756.48
  5. Step 5: Solve for x
    x = 432,914,916,756.48/886,572.80
  6. Step 6: Final answer
    x = 488,301.60

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Similar ratio
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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.