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Finding the Fourth Proportional to 438,800.34, 605,364.14 and 266,690.57

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Solution

The fourth proportional to 438,800.34, 605,364.14 and 266,690.57 is: 367,923.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,800.34 : 605,364.14 = 266,690.57 : x
  2. Step 2: Convert to fraction form
    438,800.34/605,364.14 = 266,690.57/x
  3. Step 3: Cross multiply
    438,800.34x = 605,364.14 × 266,690.57
  4. Step 4: Simplify right side
    438,800.34x = 161,444,907,554.16
  5. Step 5: Solve for x
    x = 161,444,907,554.16/438,800.34
  6. Step 6: Final answer
    x = 367,923.39

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1.5x scale

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.