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Finding the Fourth Proportional to 672,615.19, 927,684.09 and 430,920.25

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Solution

The fourth proportional to 672,615.19, 927,684.09 and 430,920.25 is: 594,333.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,615.19 : 927,684.09 = 430,920.25 : x
  2. Step 2: Convert to fraction form
    672,615.19/927,684.09 = 430,920.25/x
  3. Step 3: Cross multiply
    672,615.19x = 927,684.09 × 430,920.25
  4. Step 4: Simplify right side
    672,615.19x = 399,757,862,882.84
  5. Step 5: Solve for x
    x = 399,757,862,882.84/672,615.19
  6. Step 6: Final answer
    x = 594,333.68

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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.