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Finding the Fourth Proportional to 458,133.37, 686,498.69 and 191,748.87

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Solution

The fourth proportional to 458,133.37, 686,498.69 and 191,748.87 is: 287,329.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,133.37 : 686,498.69 = 191,748.87 : x
  2. Step 2: Convert to fraction form
    458,133.37/686,498.69 = 191,748.87/x
  3. Step 3: Cross multiply
    458,133.37x = 686,498.69 × 191,748.87
  4. Step 4: Simplify right side
    458,133.37x = 131,635,348,543.35
  5. Step 5: Solve for x
    x = 131,635,348,543.35/458,133.37
  6. Step 6: Final answer
    x = 287,329.76

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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.