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Finding the Fourth Proportional to 668,782.05, 922,919.15 and 382,308.57

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Solution

The fourth proportional to 668,782.05, 922,919.15 and 382,308.57 is: 527,585.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,782.05 : 922,919.15 = 382,308.57 : x
  2. Step 2: Convert to fraction form
    668,782.05/922,919.15 = 382,308.57/x
  3. Step 3: Cross multiply
    668,782.05x = 922,919.15 × 382,308.57
  4. Step 4: Simplify right side
    668,782.05x = 352,839,898,550.57
  5. Step 5: Solve for x
    x = 352,839,898,550.57/668,782.05
  6. Step 6: Final answer
    x = 527,585.78

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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.