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Finding the Fourth Proportional to 673,355.84, 929,230.56 and 431,638.28

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Solution

The fourth proportional to 673,355.84, 929,230.56 and 431,638.28 is: 595,660.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,355.84 : 929,230.56 = 431,638.28 : x
  2. Step 2: Convert to fraction form
    673,355.84/929,230.56 = 431,638.28/x
  3. Step 3: Cross multiply
    673,355.84x = 929,230.56 × 431,638.28
  4. Step 4: Simplify right side
    673,355.84x = 401,091,480,641.84
  5. Step 5: Solve for x
    x = 401,091,480,641.84/673,355.84
  6. Step 6: Final answer
    x = 595,660.51

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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.