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Finding the Fourth Proportional to 572,693.10, 857,290.05 and 446,721.90

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Solution

The fourth proportional to 572,693.10, 857,290.05 and 446,721.90 is: 668,718.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,693.10 : 857,290.05 = 446,721.90 : x
  2. Step 2: Convert to fraction form
    572,693.10/857,290.05 = 446,721.90/x
  3. Step 3: Cross multiply
    572,693.10x = 857,290.05 × 446,721.90
  4. Step 4: Simplify right side
    572,693.10x = 382,970,239,987.10
  5. Step 5: Solve for x
    x = 382,970,239,987.10/572,693.10
  6. Step 6: Final answer
    x = 668,718.10

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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.