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Finding the Fourth Proportional to 99,663.83, 137,569.41 and 59,390.22

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Solution

The fourth proportional to 99,663.83, 137,569.41 and 59,390.22 is: 81,978.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,663.83 : 137,569.41 = 59,390.22 : x
  2. Step 2: Convert to fraction form
    99,663.83/137,569.41 = 59,390.22/x
  3. Step 3: Cross multiply
    99,663.83x = 137,569.41 × 59,390.22
  4. Step 4: Simplify right side
    99,663.83x = 8,170,277,228.22
  5. Step 5: Solve for x
    x = 8,170,277,228.22/99,663.83
  6. Step 6: Final answer
    x = 81,978.36

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1.5x scale

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.