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Finding the Fourth Proportional to 530,862.80, 732,565.42 and 289,144.22

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Solution

The fourth proportional to 530,862.80, 732,565.42 and 289,144.22 is: 399,005.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,862.80 : 732,565.42 = 289,144.22 : x
  2. Step 2: Convert to fraction form
    530,862.80/732,565.42 = 289,144.22/x
  3. Step 3: Cross multiply
    530,862.80x = 732,565.42 × 289,144.22
  4. Step 4: Simplify right side
    530,862.80x = 211,817,052,579.19
  5. Step 5: Solve for x
    x = 211,817,052,579.19/530,862.80
  6. Step 6: Final answer
    x = 399,005.27

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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.