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Finding the Fourth Proportional to 631,562.30, 871,942.11 and 411,009.74

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Solution

The fourth proportional to 631,562.30, 871,942.11 and 411,009.74 is: 567,444.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,562.30 : 871,942.11 = 411,009.74 : x
  2. Step 2: Convert to fraction form
    631,562.30/871,942.11 = 411,009.74/x
  3. Step 3: Cross multiply
    631,562.30x = 871,942.11 × 411,009.74
  4. Step 4: Simplify right side
    631,562.30x = 358,376,699,926.15
  5. Step 5: Solve for x
    x = 358,376,699,926.15/631,562.30
  6. Step 6: Final answer
    x = 567,444.73

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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.