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Finding the Fourth Proportional to 393,398.51, 587,858.23 and 295,386.15

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Solution

The fourth proportional to 393,398.51, 587,858.23 and 295,386.15 is: 441,397.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,398.51 : 587,858.23 = 295,386.15 : x
  2. Step 2: Convert to fraction form
    393,398.51/587,858.23 = 295,386.15/x
  3. Step 3: Cross multiply
    393,398.51x = 587,858.23 × 295,386.15
  4. Step 4: Simplify right side
    393,398.51x = 173,645,178,567.05
  5. Step 5: Solve for x
    x = 173,645,178,567.05/393,398.51
  6. Step 6: Final answer
    x = 441,397.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.