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Finding the Fourth Proportional to 124,564.63, 171,899.54 and 74,262.55

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Solution

The fourth proportional to 124,564.63, 171,899.54 and 74,262.55 is: 102,482.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,564.63 : 171,899.54 = 74,262.55 : x
  2. Step 2: Convert to fraction form
    124,564.63/171,899.54 = 74,262.55/x
  3. Step 3: Cross multiply
    124,564.63x = 171,899.54 × 74,262.55
  4. Step 4: Simplify right side
    124,564.63x = 12,765,697,812.91
  5. Step 5: Solve for x
    x = 12,765,697,812.91/124,564.63
  6. Step 6: Final answer
    x = 102,482.53

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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.