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Finding the Fourth Proportional to 689,777.08, 951,878.24 and 431,796.28

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Solution

The fourth proportional to 689,777.08, 951,878.24 and 431,796.28 is: 595,870.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,777.08 : 951,878.24 = 431,796.28 : x
  2. Step 2: Convert to fraction form
    689,777.08/951,878.24 = 431,796.28/x
  3. Step 3: Cross multiply
    689,777.08x = 951,878.24 × 431,796.28
  4. Step 4: Simplify right side
    689,777.08x = 411,017,483,044.95
  5. Step 5: Solve for x
    x = 411,017,483,044.95/689,777.08
  6. Step 6: Final answer
    x = 595,870.02

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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.