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Finding the Fourth Proportional to 98,966, 136,573.08 and 54,254

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Solution

The fourth proportional to 98,966, 136,573.08 and 54,254 is: 74,870.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,966 : 136,573.08 = 54,254 : x
  2. Step 2: Convert to fraction form
    98,966/136,573.08 = 54,254/x
  3. Step 3: Cross multiply
    98,966x = 136,573.08 × 54,254
  4. Step 4: Simplify right side
    98,966x = 7,409,635,882.32
  5. Step 5: Solve for x
    x = 7,409,635,882.32/98,966
  6. Step 6: Final answer
    x = 74,870.52

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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.