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Finding the Fourth Proportional to 577,098.30, 865,647.45 and 328,266.30

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Solution

The fourth proportional to 577,098.30, 865,647.45 and 328,266.30 is: 492,399.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,098.30 : 865,647.45 = 328,266.30 : x
  2. Step 2: Convert to fraction form
    577,098.30/865,647.45 = 328,266.30/x
  3. Step 3: Cross multiply
    577,098.30x = 865,647.45 × 328,266.30
  4. Step 4: Simplify right side
    577,098.30x = 284,162,885,515.94
  5. Step 5: Solve for x
    x = 284,162,885,515.94/577,098.30
  6. Step 6: Final answer
    x = 492,399.45

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Double scale
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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.