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Finding the Fourth Proportional to 328,053.60, 492,099.84 and 103,421.16

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Solution

The fourth proportional to 328,053.60, 492,099.84 and 103,421.16 is: 155,137.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,053.60 : 492,099.84 = 103,421.16 : x
  2. Step 2: Convert to fraction form
    328,053.60/492,099.84 = 103,421.16/x
  3. Step 3: Cross multiply
    328,053.60x = 492,099.84 × 103,421.16
  4. Step 4: Simplify right side
    328,053.60x = 50,893,536,288.61
  5. Step 5: Solve for x
    x = 50,893,536,288.61/328,053.60
  6. Step 6: Final answer
    x = 155,137.87

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.