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Finding the Fourth Proportional to 152,655.90, 210,690.37 and 84,694.76

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Solution

The fourth proportional to 152,655.90, 210,690.37 and 84,694.76 is: 116,892.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,655.90 : 210,690.37 = 84,694.76 : x
  2. Step 2: Convert to fraction form
    152,655.90/210,690.37 = 84,694.76/x
  3. Step 3: Cross multiply
    152,655.90x = 210,690.37 × 84,694.76
  4. Step 4: Simplify right side
    152,655.90x = 17,844,369,371.26
  5. Step 5: Solve for x
    x = 17,844,369,371.26/152,655.90
  6. Step 6: Final answer
    x = 116,892.76

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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.