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Finding the Fourth Proportional to 326,051.20, 488,493.60 and 201,246.40

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Solution

The fourth proportional to 326,051.20, 488,493.60 and 201,246.40 is: 301,509.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,051.20 : 488,493.60 = 201,246.40 : x
  2. Step 2: Convert to fraction form
    326,051.20/488,493.60 = 201,246.40/x
  3. Step 3: Cross multiply
    326,051.20x = 488,493.60 × 201,246.40
  4. Step 4: Simplify right side
    326,051.20x = 98,307,578,423.04
  5. Step 5: Solve for x
    x = 98,307,578,423.04/326,051.20
  6. Step 6: Final answer
    x = 301,509.64

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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.