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Finding the Fourth Proportional to 593,061.94, 818,427 and 321,133.20

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Solution

The fourth proportional to 593,061.94, 818,427 and 321,133.20 is: 443,164.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    593,061.94 : 818,427 = 321,133.20 : x
  2. Step 2: Convert to fraction form
    593,061.94/818,427 = 321,133.20/x
  3. Step 3: Cross multiply
    593,061.94x = 818,427 × 321,133.20
  4. Step 4: Simplify right side
    593,061.94x = 262,824,081,476.40
  5. Step 5: Solve for x
    x = 262,824,081,476.40/593,061.94
  6. Step 6: Final answer
    x = 443,164.64

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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.