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Finding the Fourth Proportional to 571,026.80, 856,540.20 and 359,980.40

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Solution

The fourth proportional to 571,026.80, 856,540.20 and 359,980.40 is: 539,970.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,026.80 : 856,540.20 = 359,980.40 : x
  2. Step 2: Convert to fraction form
    571,026.80/856,540.20 = 359,980.40/x
  3. Step 3: Cross multiply
    571,026.80x = 856,540.20 × 359,980.40
  4. Step 4: Simplify right side
    571,026.80x = 308,337,683,812.08
  5. Step 5: Solve for x
    x = 308,337,683,812.08/571,026.80
  6. Step 6: Final answer
    x = 539,970.60

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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.