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Finding the Fourth Proportional to 531,066.77, 732,862.83 and 289,351.07

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Solution

The fourth proportional to 531,066.77, 732,862.83 and 289,351.07 is: 399,299.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,066.77 : 732,862.83 = 289,351.07 : x
  2. Step 2: Convert to fraction form
    531,066.77/732,862.83 = 289,351.07/x
  3. Step 3: Cross multiply
    531,066.77x = 732,862.83 × 289,351.07
  4. Step 4: Simplify right side
    531,066.77x = 212,054,640,359.41
  5. Step 5: Solve for x
    x = 212,054,640,359.41/531,066.77
  6. Step 6: Final answer
    x = 399,299.40

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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.