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Finding the Fourth Proportional to 522,076.40, 783,114.60 and 389,216.15

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Solution

The fourth proportional to 522,076.40, 783,114.60 and 389,216.15 is: 583,824.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,076.40 : 783,114.60 = 389,216.15 : x
  2. Step 2: Convert to fraction form
    522,076.40/783,114.60 = 389,216.15/x
  3. Step 3: Cross multiply
    522,076.40x = 783,114.60 × 389,216.15
  4. Step 4: Simplify right side
    522,076.40x = 304,800,849,620.79
  5. Step 5: Solve for x
    x = 304,800,849,620.79/522,076.40
  6. Step 6: Final answer
    x = 583,824.23

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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.