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Finding the Fourth Proportional to 633,439.89, 874,147.28 and 346,964.76

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Solution

The fourth proportional to 633,439.89, 874,147.28 and 346,964.76 is: 478,811.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,439.89 : 874,147.28 = 346,964.76 : x
  2. Step 2: Convert to fraction form
    633,439.89/874,147.28 = 346,964.76/x
  3. Step 3: Cross multiply
    633,439.89x = 874,147.28 × 346,964.76
  4. Step 4: Simplify right side
    633,439.89x = 303,298,299,475.03
  5. Step 5: Solve for x
    x = 303,298,299,475.03/633,439.89
  6. Step 6: Final answer
    x = 478,811.49

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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.