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Finding the Fourth Proportional to 469,990.72, 648,597.30 and 266,041.90

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Solution

The fourth proportional to 469,990.72, 648,597.30 and 266,041.90 is: 367,143.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,990.72 : 648,597.30 = 266,041.90 : x
  2. Step 2: Convert to fraction form
    469,990.72/648,597.30 = 266,041.90/x
  3. Step 3: Cross multiply
    469,990.72x = 648,597.30 × 266,041.90
  4. Step 4: Simplify right side
    469,990.72x = 172,554,058,026.87
  5. Step 5: Solve for x
    x = 172,554,058,026.87/469,990.72
  6. Step 6: Final answer
    x = 367,143.54

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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.