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Finding the Fourth Proportional to 531,019.99, 732,805.39 and 289,301.82

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Solution

The fourth proportional to 531,019.99, 732,805.39 and 289,301.82 is: 399,235.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,019.99 : 732,805.39 = 289,301.82 : x
  2. Step 2: Convert to fraction form
    531,019.99/732,805.39 = 289,301.82/x
  3. Step 3: Cross multiply
    531,019.99x = 732,805.39 × 289,301.82
  4. Step 4: Simplify right side
    531,019.99x = 212,001,933,032.81
  5. Step 5: Solve for x
    x = 212,001,933,032.81/531,019.99
  6. Step 6: Final answer
    x = 399,235.32

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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.