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Finding the Fourth Proportional to 530,991.43, 732,776.12 and 289,273.93

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Solution

The fourth proportional to 530,991.43, 732,776.12 and 289,273.93 is: 399,202.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,991.43 : 732,776.12 = 289,273.93 : x
  2. Step 2: Convert to fraction form
    530,991.43/732,776.12 = 289,273.93/x
  3. Step 3: Cross multiply
    530,991.43x = 732,776.12 × 289,273.93
  4. Step 4: Simplify right side
    530,991.43x = 211,973,029,970.89
  5. Step 5: Solve for x
    x = 211,973,029,970.89/530,991.43
  6. Step 6: Final answer
    x = 399,202.35

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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.