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Finding the Fourth Proportional to 124,812.72, 187,254.72 and 61,652.16

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Solution

The fourth proportional to 124,812.72, 187,254.72 and 61,652.16 is: 92,495.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,812.72 : 187,254.72 = 61,652.16 : x
  2. Step 2: Convert to fraction form
    124,812.72/187,254.72 = 61,652.16/x
  3. Step 3: Cross multiply
    124,812.72x = 187,254.72 × 61,652.16
  4. Step 4: Simplify right side
    124,812.72x = 11,544,657,958.20
  5. Step 5: Solve for x
    x = 11,544,657,958.20/124,812.72
  6. Step 6: Final answer
    x = 92,495.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.