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Finding the Fourth Proportional to 614,778.80, 922,168.20 and 349,058.30

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Solution

The fourth proportional to 614,778.80, 922,168.20 and 349,058.30 is: 523,587.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,778.80 : 922,168.20 = 349,058.30 : x
  2. Step 2: Convert to fraction form
    614,778.80/922,168.20 = 349,058.30/x
  3. Step 3: Cross multiply
    614,778.80x = 922,168.20 × 349,058.30
  4. Step 4: Simplify right side
    614,778.80x = 321,890,464,206.06
  5. Step 5: Solve for x
    x = 321,890,464,206.06/614,778.80
  6. Step 6: Final answer
    x = 523,587.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.