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Finding the Fourth Proportional to 545,859.20, 818,788.80 and 190,909.10

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Solution

The fourth proportional to 545,859.20, 818,788.80 and 190,909.10 is: 286,363.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,859.20 : 818,788.80 = 190,909.10 : x
  2. Step 2: Convert to fraction form
    545,859.20/818,788.80 = 190,909.10/x
  3. Step 3: Cross multiply
    545,859.20x = 818,788.80 × 190,909.10
  4. Step 4: Simplify right side
    545,859.20x = 156,314,232,898.08
  5. Step 5: Solve for x
    x = 156,314,232,898.08/545,859.20
  6. Step 6: Final answer
    x = 286,363.65

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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.