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Finding the Fourth Proportional to 593,421.40, 818,920.58 and 321,496.20

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Solution

The fourth proportional to 593,421.40, 818,920.58 and 321,496.20 is: 443,664.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    593,421.40 : 818,920.58 = 321,496.20 : x
  2. Step 2: Convert to fraction form
    593,421.40/818,920.58 = 321,496.20/x
  3. Step 3: Cross multiply
    593,421.40x = 818,920.58 × 321,496.20
  4. Step 4: Simplify right side
    593,421.40x = 263,279,854,571.80
  5. Step 5: Solve for x
    x = 263,279,854,571.80/593,421.40
  6. Step 6: Final answer
    x = 443,664.24

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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.