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Finding the Fourth Proportional to 124,461.60, 171,756.77 and 67,872.98

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Solution

The fourth proportional to 124,461.60, 171,756.77 and 67,872.98 is: 93,664.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,461.60 : 171,756.77 = 67,872.98 : x
  2. Step 2: Convert to fraction form
    124,461.60/171,756.77 = 67,872.98/x
  3. Step 3: Cross multiply
    124,461.60x = 171,756.77 × 67,872.98
  4. Step 4: Simplify right side
    124,461.60x = 11,657,643,320.76
  5. Step 5: Solve for x
    x = 11,657,643,320.76/124,461.60
  6. Step 6: Final answer
    x = 93,664.58

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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.