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Finding the Fourth Proportional to 321,437.29, 443,582.72 and 183,613.23

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Solution

The fourth proportional to 321,437.29, 443,582.72 and 183,613.23 is: 253,385.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,437.29 : 443,582.72 = 183,613.23 : x
  2. Step 2: Convert to fraction form
    321,437.29/443,582.72 = 183,613.23/x
  3. Step 3: Cross multiply
    321,437.29x = 443,582.72 × 183,613.23
  4. Step 4: Simplify right side
    321,437.29x = 81,447,655,503.66
  5. Step 5: Solve for x
    x = 81,447,655,503.66/321,437.29
  6. Step 6: Final answer
    x = 253,385.84

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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.