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Finding the Fourth Proportional to 531,649.20, 733,675.44 and 289,932.24

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Solution

The fourth proportional to 531,649.20, 733,675.44 and 289,932.24 is: 400,106.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,649.20 : 733,675.44 = 289,932.24 : x
  2. Step 2: Convert to fraction form
    531,649.20/733,675.44 = 289,932.24/x
  3. Step 3: Cross multiply
    531,649.20x = 733,675.44 × 289,932.24
  4. Step 4: Simplify right side
    531,649.20x = 212,716,163,752.19
  5. Step 5: Solve for x
    x = 212,716,163,752.19/531,649.20
  6. Step 6: Final answer
    x = 400,106.24

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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.