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Finding the Fourth Proportional to 628,005.89, 866,639.95 and 341,519.81

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Solution

The fourth proportional to 628,005.89, 866,639.95 and 341,519.81 is: 471,292.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,005.89 : 866,639.95 = 341,519.81 : x
  2. Step 2: Convert to fraction form
    628,005.89/866,639.95 = 341,519.81/x
  3. Step 3: Cross multiply
    628,005.89x = 866,639.95 × 341,519.81
  4. Step 4: Simplify right side
    628,005.89x = 295,974,709,354.81
  5. Step 5: Solve for x
    x = 295,974,709,354.81/628,005.89
  6. Step 6: Final answer
    x = 471,292.89

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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.