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Finding the Fourth Proportional to 530,999.28, 732,776.10 and 289,281.27

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Solution

The fourth proportional to 530,999.28, 732,776.10 and 289,281.27 is: 399,206.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,999.28 : 732,776.10 = 289,281.27 : x
  2. Step 2: Convert to fraction form
    530,999.28/732,776.10 = 289,281.27/x
  3. Step 3: Cross multiply
    530,999.28x = 732,776.10 × 289,281.27
  4. Step 4: Simplify right side
    530,999.28x = 211,978,400,833.65
  5. Step 5: Solve for x
    x = 211,978,400,833.65/530,999.28
  6. Step 6: Final answer
    x = 399,206.57

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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.