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Finding the Fourth Proportional to 124,353.98, 171,636.19 and 79,023.12

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Solution

The fourth proportional to 124,353.98, 171,636.19 and 79,023.12 is: 109,069.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,353.98 : 171,636.19 = 79,023.12 : x
  2. Step 2: Convert to fraction form
    124,353.98/171,636.19 = 79,023.12/x
  3. Step 3: Cross multiply
    124,353.98x = 171,636.19 × 79,023.12
  4. Step 4: Simplify right side
    124,353.98x = 13,563,227,102.50
  5. Step 5: Solve for x
    x = 13,563,227,102.50/124,353.98
  6. Step 6: Final answer
    x = 109,069.50

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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.