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Finding the Fourth Proportional to 136,846.55, 188,848.52 and 76,417.01

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Solution

The fourth proportional to 136,846.55, 188,848.52 and 76,417.01 is: 105,455.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,846.55 : 188,848.52 = 76,417.01 : x
  2. Step 2: Convert to fraction form
    136,846.55/188,848.52 = 76,417.01/x
  3. Step 3: Cross multiply
    136,846.55x = 188,848.52 × 76,417.01
  4. Step 4: Simplify right side
    136,846.55x = 14,431,237,915.00
  5. Step 5: Solve for x
    x = 14,431,237,915.00/136,846.55
  6. Step 6: Final answer
    x = 105,455.62

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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.