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Finding the Fourth Proportional to 511,587.97, 767,402.21 and 191,706.42

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Solution

The fourth proportional to 511,587.97, 767,402.21 and 191,706.42 is: 287,567.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,587.97 : 767,402.21 = 191,706.42 : x
  2. Step 2: Convert to fraction form
    511,587.97/767,402.21 = 191,706.42/x
  3. Step 3: Cross multiply
    511,587.97x = 767,402.21 × 191,706.42
  4. Step 4: Simplify right side
    511,587.97x = 147,115,930,379.19
  5. Step 5: Solve for x
    x = 147,115,930,379.19/511,587.97
  6. Step 6: Final answer
    x = 287,567.22

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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.