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Finding the Fourth Proportional to 805,618, 1,208,169.01 and 265,753.45

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Solution

The fourth proportional to 805,618, 1,208,169.01 and 265,753.45 is: 398,545.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,618 : 1,208,169.01 = 265,753.45 : x
  2. Step 2: Convert to fraction form
    805,618/1,208,169.01 = 265,753.45/x
  3. Step 3: Cross multiply
    805,618x = 1,208,169.01 × 265,753.45
  4. Step 4: Simplify right side
    805,618x = 321,075,082,590.59
  5. Step 5: Solve for x
    x = 321,075,082,590.59/805,618
  6. Step 6: Final answer
    x = 398,545.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.