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Finding the Fourth Proportional to 510,199.20, 765,298.80 and 194,666.40

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Solution

The fourth proportional to 510,199.20, 765,298.80 and 194,666.40 is: 291,999.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,199.20 : 765,298.80 = 194,666.40 : x
  2. Step 2: Convert to fraction form
    510,199.20/765,298.80 = 194,666.40/x
  3. Step 3: Cross multiply
    510,199.20x = 765,298.80 × 194,666.40
  4. Step 4: Simplify right side
    510,199.20x = 148,977,962,320.32
  5. Step 5: Solve for x
    x = 148,977,962,320.32/510,199.20
  6. Step 6: Final answer
    x = 291,999.60

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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.