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Finding the Fourth Proportional to 832,014.80, 1,248,022.20 and 411,203.60

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Solution

The fourth proportional to 832,014.80, 1,248,022.20 and 411,203.60 is: 616,805.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    832,014.80 : 1,248,022.20 = 411,203.60 : x
  2. Step 2: Convert to fraction form
    832,014.80/1,248,022.20 = 411,203.60/x
  3. Step 3: Cross multiply
    832,014.80x = 1,248,022.20 × 411,203.60
  4. Step 4: Simplify right side
    832,014.80x = 513,191,221,519.92
  5. Step 5: Solve for x
    x = 513,191,221,519.92/832,014.80
  6. Step 6: Final answer
    x = 616,805.40

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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.