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Finding the Fourth Proportional to 382,014.90, 572,876.55 and 115,686.90

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Solution

The fourth proportional to 382,014.90, 572,876.55 and 115,686.90 is: 173,486.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,014.90 : 572,876.55 = 115,686.90 : x
  2. Step 2: Convert to fraction form
    382,014.90/572,876.55 = 115,686.90/x
  3. Step 3: Cross multiply
    382,014.90x = 572,876.55 × 115,686.90
  4. Step 4: Simplify right side
    382,014.90x = 66,274,312,152.20
  5. Step 5: Solve for x
    x = 66,274,312,152.20/382,014.90
  6. Step 6: Final answer
    x = 173,486.20

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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.