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Finding the Fourth Proportional to 328,065.40, 492,098.10 and 286,593.40

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Solution

The fourth proportional to 328,065.40, 492,098.10 and 286,593.40 is: 429,890.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,065.40 : 492,098.10 = 286,593.40 : x
  2. Step 2: Convert to fraction form
    328,065.40/492,098.10 = 286,593.40/x
  3. Step 3: Cross multiply
    328,065.40x = 492,098.10 × 286,593.40
  4. Step 4: Simplify right side
    328,065.40x = 141,032,067,612.54
  5. Step 5: Solve for x
    x = 141,032,067,612.54/328,065.40
  6. Step 6: Final answer
    x = 429,890.10

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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.