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Finding the Fourth Proportional to 123,753.21, 170,779.32 and 70,037.25

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Solution

The fourth proportional to 123,753.21, 170,779.32 and 70,037.25 is: 96,651.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,753.21 : 170,779.32 = 70,037.25 : x
  2. Step 2: Convert to fraction form
    123,753.21/170,779.32 = 70,037.25/x
  3. Step 3: Cross multiply
    123,753.21x = 170,779.32 × 70,037.25
  4. Step 4: Simplify right side
    123,753.21x = 11,960,913,929.67
  5. Step 5: Solve for x
    x = 11,960,913,929.67/123,753.21
  6. Step 6: Final answer
    x = 96,651.34

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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.