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Finding the Fourth Proportional to 439,605.84, 606,656.40 and 238,401.84

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Solution

The fourth proportional to 439,605.84, 606,656.40 and 238,401.84 is: 328,994.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,605.84 : 606,656.40 = 238,401.84 : x
  2. Step 2: Convert to fraction form
    439,605.84/606,656.40 = 238,401.84/x
  3. Step 3: Cross multiply
    439,605.84x = 606,656.40 × 238,401.84
  4. Step 4: Simplify right side
    439,605.84x = 144,628,002,007.78
  5. Step 5: Solve for x
    x = 144,628,002,007.78/439,605.84
  6. Step 6: Final answer
    x = 328,994.72

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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.