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Finding the Fourth Proportional to 671,323.16, 926,426.22 and 369,515

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Solution

The fourth proportional to 671,323.16, 926,426.22 and 369,515 is: 509,930.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,323.16 : 926,426.22 = 369,515 : x
  2. Step 2: Convert to fraction form
    671,323.16/926,426.22 = 369,515/x
  3. Step 3: Cross multiply
    671,323.16x = 926,426.22 × 369,515
  4. Step 4: Simplify right side
    671,323.16x = 342,328,384,683.30
  5. Step 5: Solve for x
    x = 342,328,384,683.30/671,323.16
  6. Step 6: Final answer
    x = 509,930.84

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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.