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Finding the Fourth Proportional to 19,872,143.30, 29,808,214.95 and 17,352,719.30

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Solution

The fourth proportional to 19,872,143.30, 29,808,214.95 and 17,352,719.30 is: 26,029,078.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872,143.30 : 29,808,214.95 = 17,352,719.30 : x
  2. Step 2: Convert to fraction form
    19,872,143.30/29,808,214.95 = 17,352,719.30/x
  3. Step 3: Cross multiply
    19,872,143.30x = 29,808,214.95 × 17,352,719.30
  4. Step 4: Simplify right side
    19,872,143.30x = 517,253,586,861,413.56
  5. Step 5: Solve for x
    x = 517,253,586,861,413.56/19,872,143.30
  6. Step 6: Final answer
    x = 26,029,078.95

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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.