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Finding the Fourth Proportional to 545,208.40, 817,812.60 and 395,909.20

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Solution

The fourth proportional to 545,208.40, 817,812.60 and 395,909.20 is: 593,863.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,208.40 : 817,812.60 = 395,909.20 : x
  2. Step 2: Convert to fraction form
    545,208.40/817,812.60 = 395,909.20/x
  3. Step 3: Cross multiply
    545,208.40x = 817,812.60 × 395,909.20
  4. Step 4: Simplify right side
    545,208.40x = 323,779,532,215.92
  5. Step 5: Solve for x
    x = 323,779,532,215.92/545,208.40
  6. Step 6: Final answer
    x = 593,863.80

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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.