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Finding the Fourth Proportional to 520,456.93, 718,191.01 and 316,479.69

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Solution

The fourth proportional to 520,456.93, 718,191.01 and 316,479.69 is: 436,717.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,456.93 : 718,191.01 = 316,479.69 : x
  2. Step 2: Convert to fraction form
    520,456.93/718,191.01 = 316,479.69/x
  3. Step 3: Cross multiply
    520,456.93x = 718,191.01 × 316,479.69
  4. Step 4: Simplify right side
    520,456.93x = 227,292,866,820.99
  5. Step 5: Solve for x
    x = 227,292,866,820.99/520,456.93
  6. Step 6: Final answer
    x = 436,717.92

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