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Finding the Fourth Proportional to 584,660.25, 806,831.15 and 316,388.25

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Solution

The fourth proportional to 584,660.25, 806,831.15 and 316,388.25 is: 436,615.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,660.25 : 806,831.15 = 316,388.25 : x
  2. Step 2: Convert to fraction form
    584,660.25/806,831.15 = 316,388.25/x
  3. Step 3: Cross multiply
    584,660.25x = 806,831.15 × 316,388.25
  4. Step 4: Simplify right side
    584,660.25x = 255,271,894,012.05
  5. Step 5: Solve for x
    x = 255,271,894,012.05/584,660.25
  6. Step 6: Final answer
    x = 436,615.79

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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.