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Finding the Fourth Proportional to 627,410.39, 865,831.10 and 340,932.02

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Solution

The fourth proportional to 627,410.39, 865,831.10 and 340,932.02 is: 470,488.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,410.39 : 865,831.10 = 340,932.02 : x
  2. Step 2: Convert to fraction form
    627,410.39/865,831.10 = 340,932.02/x
  3. Step 3: Cross multiply
    627,410.39x = 865,831.10 × 340,932.02
  4. Step 4: Simplify right side
    627,410.39x = 295,189,539,868.01
  5. Step 5: Solve for x
    x = 295,189,539,868.01/627,410.39
  6. Step 6: Final answer
    x = 470,488.77

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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.