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Finding the Fourth Proportional to 57,991,572.80, 86,999,800.80 and 17,606,139.20

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Solution

The fourth proportional to 57,991,572.80, 86,999,800.80 and 17,606,139.20 is: 26,412,986.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,991,572.80 : 86,999,800.80 = 17,606,139.20 : x
  2. Step 2: Convert to fraction form
    57,991,572.80/86,999,800.80 = 17,606,139.20/x
  3. Step 3: Cross multiply
    57,991,572.80x = 86,999,800.80 × 17,606,139.20
  4. Step 4: Simplify right side
    57,991,572.80x = 1,531,730,603,257,071.25
  5. Step 5: Solve for x
    x = 1,531,730,603,257,071.25/57,991,572.80
  6. Step 6: Final answer
    x = 26,412,986.05

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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.