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Finding the Fourth Proportional to 522,076.40, 783,114.60 and 439,407.80

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Solution

The fourth proportional to 522,076.40, 783,114.60 and 439,407.80 is: 659,111.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,076.40 : 783,114.60 = 439,407.80 : x
  2. Step 2: Convert to fraction form
    522,076.40/783,114.60 = 439,407.80/x
  3. Step 3: Cross multiply
    522,076.40x = 783,114.60 × 439,407.80
  4. Step 4: Simplify right side
    522,076.40x = 344,106,663,533.88
  5. Step 5: Solve for x
    x = 344,106,663,533.88/522,076.40
  6. Step 6: Final answer
    x = 659,111.70

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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.