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Finding the Fourth Proportional to 306,609.48, 459,986.76 and 104,218.92

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Solution

The fourth proportional to 306,609.48, 459,986.76 and 104,218.92 is: 156,353.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,609.48 : 459,986.76 = 104,218.92 : x
  2. Step 2: Convert to fraction form
    306,609.48/459,986.76 = 104,218.92/x
  3. Step 3: Cross multiply
    306,609.48x = 459,986.76 × 104,218.92
  4. Step 4: Simplify right side
    306,609.48x = 47,939,323,341.50
  5. Step 5: Solve for x
    x = 47,939,323,341.50/306,609.48
  6. Step 6: Final answer
    x = 156,353.04

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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.