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Finding the Fourth Proportional to 656,551.77, 906,041.45 and 354,745.77

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Solution

The fourth proportional to 656,551.77, 906,041.45 and 354,745.77 is: 489,549.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,551.77 : 906,041.45 = 354,745.77 : x
  2. Step 2: Convert to fraction form
    656,551.77/906,041.45 = 354,745.77/x
  3. Step 3: Cross multiply
    656,551.77x = 906,041.45 × 354,745.77
  4. Step 4: Simplify right side
    656,551.77x = 321,414,370,058.44
  5. Step 5: Solve for x
    x = 321,414,370,058.44/656,551.77
  6. Step 6: Final answer
    x = 489,549.16

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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.