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Finding the Fourth Proportional to 13,057,726.80, 18,299,713.20 and 13,057,726.80

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Solution

The fourth proportional to 13,057,726.80, 18,299,713.20 and 13,057,726.80 is: 18,299,713.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,057,726.80 : 18,299,713.20 = 13,057,726.80 : x
  2. Step 2: Convert to fraction form
    13,057,726.80/18,299,713.20 = 13,057,726.80/x
  3. Step 3: Cross multiply
    13,057,726.80x = 18,299,713.20 × 13,057,726.80
  4. Step 4: Simplify right side
    13,057,726.80x = 238,952,655,483,953.75
  5. Step 5: Solve for x
    x = 238,952,655,483,953.75/13,057,726.80
  6. Step 6: Final answer
    x = 18,299,713.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.