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Finding the Fourth Proportional to 522,016.40, 783,024.60 and 417,040.40

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Solution

The fourth proportional to 522,016.40, 783,024.60 and 417,040.40 is: 625,560.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,016.40 : 783,024.60 = 417,040.40 : x
  2. Step 2: Convert to fraction form
    522,016.40/783,024.60 = 417,040.40/x
  3. Step 3: Cross multiply
    522,016.40x = 783,024.60 × 417,040.40
  4. Step 4: Simplify right side
    522,016.40x = 326,552,892,393.84
  5. Step 5: Solve for x
    x = 326,552,892,393.84/522,016.40
  6. Step 6: Final answer
    x = 625,560.60

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Double scale
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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.