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Finding the Fourth Proportional to 13,187,713.30, 19,781,569.95 and 13,187,713.30

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Solution

The fourth proportional to 13,187,713.30, 19,781,569.95 and 13,187,713.30 is: 19,781,569.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187,713.30 : 19,781,569.95 = 13,187,713.30 : x
  2. Step 2: Convert to fraction form
    13,187,713.30/19,781,569.95 = 13,187,713.30/x
  3. Step 3: Cross multiply
    13,187,713.30x = 19,781,569.95 × 13,187,713.30
  4. Step 4: Simplify right side
    13,187,713.30x = 260,873,673,124,495.34
  5. Step 5: Solve for x
    x = 260,873,673,124,495.34/13,187,713.30
  6. Step 6: Final answer
    x = 19,781,569.95

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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.