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Finding the Fourth Proportional to 622,187.60, 930,948.60 and 412,235.60

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Solution

The fourth proportional to 622,187.60, 930,948.60 and 412,235.60 is: 616,807.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,187.60 : 930,948.60 = 412,235.60 : x
  2. Step 2: Convert to fraction form
    622,187.60/930,948.60 = 412,235.60/x
  3. Step 3: Cross multiply
    622,187.60x = 930,948.60 × 412,235.60
  4. Step 4: Simplify right side
    622,187.60x = 383,770,154,690.16
  5. Step 5: Solve for x
    x = 383,770,154,690.16/622,187.60
  6. Step 6: Final answer
    x = 616,807.78

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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.