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Finding the Fourth Proportional to 563,028.63, 776,994.60 and 317,993.73

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Solution

The fourth proportional to 563,028.63, 776,994.60 and 317,993.73 is: 438,839.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,028.63 : 776,994.60 = 317,993.73 : x
  2. Step 2: Convert to fraction form
    563,028.63/776,994.60 = 317,993.73/x
  3. Step 3: Cross multiply
    563,028.63x = 776,994.60 × 317,993.73
  4. Step 4: Simplify right side
    563,028.63x = 247,079,411,043.86
  5. Step 5: Solve for x
    x = 247,079,411,043.86/563,028.63
  6. Step 6: Final answer
    x = 438,839.87

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.