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Finding the Fourth Proportional to 638,153.79, 956,891.97 and 188,812.77

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Solution

The fourth proportional to 638,153.79, 956,891.97 and 188,812.77 is: 283,118.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,153.79 : 956,891.97 = 188,812.77 : x
  2. Step 2: Convert to fraction form
    638,153.79/956,891.97 = 188,812.77/x
  3. Step 3: Cross multiply
    638,153.79x = 956,891.97 × 188,812.77
  4. Step 4: Simplify right side
    638,153.79x = 180,673,423,446.46
  5. Step 5: Solve for x
    x = 180,673,423,446.46/638,153.79
  6. Step 6: Final answer
    x = 283,118.94

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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.