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Finding the Fourth Proportional to 326,925.72, 490,379.50 and 87,041.68

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Solution

The fourth proportional to 326,925.72, 490,379.50 and 87,041.68 is: 130,560.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,925.72 : 490,379.50 = 87,041.68 : x
  2. Step 2: Convert to fraction form
    326,925.72/490,379.50 = 87,041.68/x
  3. Step 3: Cross multiply
    326,925.72x = 490,379.50 × 87,041.68
  4. Step 4: Simplify right side
    326,925.72x = 42,683,454,074.01
  5. Step 5: Solve for x
    x = 42,683,454,074.01/326,925.72
  6. Step 6: Final answer
    x = 130,560.10

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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.