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Finding the Fourth Proportional to 653,408.28, 901,801.08 and 398,907.36

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Solution

The fourth proportional to 653,408.28, 901,801.08 and 398,907.36 is: 550,551.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,408.28 : 901,801.08 = 398,907.36 : x
  2. Step 2: Convert to fraction form
    653,408.28/901,801.08 = 398,907.36/x
  3. Step 3: Cross multiply
    653,408.28x = 901,801.08 × 398,907.36
  4. Step 4: Simplify right side
    653,408.28x = 359,735,088,067.95
  5. Step 5: Solve for x
    x = 359,735,088,067.95/653,408.28
  6. Step 6: Final answer
    x = 550,551.77

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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.