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Finding the Fourth Proportional to 721,223.29, 995,312.73 and 411,171.73

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Solution

The fourth proportional to 721,223.29, 995,312.73 and 411,171.73 is: 567,431.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,223.29 : 995,312.73 = 411,171.73 : x
  2. Step 2: Convert to fraction form
    721,223.29/995,312.73 = 411,171.73/x
  3. Step 3: Cross multiply
    721,223.29x = 995,312.73 × 411,171.73
  4. Step 4: Simplify right side
    721,223.29x = 409,244,457,085.12
  5. Step 5: Solve for x
    x = 409,244,457,085.12/721,223.29
  6. Step 6: Final answer
    x = 567,431.01

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.