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Finding the Fourth Proportional to 633,840.28, 874,667.05 and 361,855.05

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Solution

The fourth proportional to 633,840.28, 874,667.05 and 361,855.05 is: 499,341.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,840.28 : 874,667.05 = 361,855.05 : x
  2. Step 2: Convert to fraction form
    633,840.28/874,667.05 = 361,855.05/x
  3. Step 3: Cross multiply
    633,840.28x = 874,667.05 × 361,855.05
  4. Step 4: Simplify right side
    633,840.28x = 316,502,689,846.47
  5. Step 5: Solve for x
    x = 316,502,689,846.47/633,840.28
  6. Step 6: Final answer
    x = 499,341.39

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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.