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Finding the Fourth Proportional to 152,636.97, 210,651.63 and 84,675.87

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Solution

The fourth proportional to 152,636.97, 210,651.63 and 84,675.87 is: 116,859.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,636.97 : 210,651.63 = 84,675.87 : x
  2. Step 2: Convert to fraction form
    152,636.97/210,651.63 = 84,675.87/x
  3. Step 3: Cross multiply
    152,636.97x = 210,651.63 × 84,675.87
  4. Step 4: Simplify right side
    152,636.97x = 17,837,110,037.17
  5. Step 5: Solve for x
    x = 17,837,110,037.17/152,636.97
  6. Step 6: Final answer
    x = 116,859.70

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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.