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Finding the Fourth Proportional to 124,418.64, 171,715.50 and 70,692.96

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Solution

The fourth proportional to 124,418.64, 171,715.50 and 70,692.96 is: 97,566.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,418.64 : 171,715.50 = 70,692.96 : x
  2. Step 2: Convert to fraction form
    124,418.64/171,715.50 = 70,692.96/x
  3. Step 3: Cross multiply
    124,418.64x = 171,715.50 × 70,692.96
  4. Step 4: Simplify right side
    124,418.64x = 12,139,076,972.88
  5. Step 5: Solve for x
    x = 12,139,076,972.88/124,418.64
  6. Step 6: Final answer
    x = 97,566.39

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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.