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Finding the Fourth Proportional to 539,558.30, 809,337.45 and 439,831.10

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Solution

The fourth proportional to 539,558.30, 809,337.45 and 439,831.10 is: 659,746.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,558.30 : 809,337.45 = 439,831.10 : x
  2. Step 2: Convert to fraction form
    539,558.30/809,337.45 = 439,831.10/x
  3. Step 3: Cross multiply
    539,558.30x = 809,337.45 × 439,831.10
  4. Step 4: Simplify right side
    539,558.30x = 355,971,780,904.70
  5. Step 5: Solve for x
    x = 355,971,780,904.70/539,558.30
  6. Step 6: Final answer
    x = 659,746.65

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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.