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Finding the Fourth Proportional to 690,714.14, 953,171.15 and 384,790.10

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Solution

The fourth proportional to 690,714.14, 953,171.15 and 384,790.10 is: 531,002.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,714.14 : 953,171.15 = 384,790.10 : x
  2. Step 2: Convert to fraction form
    690,714.14/953,171.15 = 384,790.10/x
  3. Step 3: Cross multiply
    690,714.14x = 953,171.15 × 384,790.10
  4. Step 4: Simplify right side
    690,714.14x = 366,770,815,435.81
  5. Step 5: Solve for x
    x = 366,770,815,435.81/690,714.14
  6. Step 6: Final answer
    x = 531,002.33

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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.