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Finding the Fourth Proportional to 415,518.10, 623,277.15 and 344,659.30

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Solution

The fourth proportional to 415,518.10, 623,277.15 and 344,659.30 is: 516,988.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,518.10 : 623,277.15 = 344,659.30 : x
  2. Step 2: Convert to fraction form
    415,518.10/623,277.15 = 344,659.30/x
  3. Step 3: Cross multiply
    415,518.10x = 623,277.15 × 344,659.30
  4. Step 4: Simplify right side
    415,518.10x = 214,818,266,225.00
  5. Step 5: Solve for x
    x = 214,818,266,225.00/415,518.10
  6. Step 6: Final answer
    x = 516,988.95

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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.