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Finding the Fourth Proportional to 663,233.62, 914,612.17 and 421,095.81

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Solution

The fourth proportional to 663,233.62, 914,612.17 and 421,095.81 is: 580,699.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,233.62 : 914,612.17 = 421,095.81 : x
  2. Step 2: Convert to fraction form
    663,233.62/914,612.17 = 421,095.81/x
  3. Step 3: Cross multiply
    663,233.62x = 914,612.17 × 421,095.81
  4. Step 4: Simplify right side
    663,233.62x = 385,139,352,562.01
  5. Step 5: Solve for x
    x = 385,139,352,562.01/663,233.62
  6. Step 6: Final answer
    x = 580,699.38

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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.