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Finding the Fourth Proportional to 124,296.40, 171,461.64 and 73,985.68

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Solution

The fourth proportional to 124,296.40, 171,461.64 and 73,985.68 is: 102,060.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,296.40 : 171,461.64 = 73,985.68 : x
  2. Step 2: Convert to fraction form
    124,296.40/171,461.64 = 73,985.68/x
  3. Step 3: Cross multiply
    124,296.40x = 171,461.64 × 73,985.68
  4. Step 4: Simplify right side
    124,296.40x = 12,685,706,029.32
  5. Step 5: Solve for x
    x = 12,685,706,029.32/124,296.40
  6. Step 6: Final answer
    x = 102,060.12

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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.