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Finding the Fourth Proportional to 570,409.29, 787,175.42 and 328,651.02

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Solution

The fourth proportional to 570,409.29, 787,175.42 and 328,651.02 is: 453,544.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,409.29 : 787,175.42 = 328,651.02 : x
  2. Step 2: Convert to fraction form
    570,409.29/787,175.42 = 328,651.02/x
  3. Step 3: Cross multiply
    570,409.29x = 787,175.42 × 328,651.02
  4. Step 4: Simplify right side
    570,409.29x = 258,706,003,058.67
  5. Step 5: Solve for x
    x = 258,706,003,058.67/570,409.29
  6. Step 6: Final answer
    x = 453,544.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.