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Finding the Fourth Proportional to 152,671.66, 210,690.27 and 84,686.42

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Solution

The fourth proportional to 152,671.66, 210,690.27 and 84,686.42 is: 116,869.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,671.66 : 210,690.27 = 84,686.42 : x
  2. Step 2: Convert to fraction form
    152,671.66/210,690.27 = 84,686.42/x
  3. Step 3: Cross multiply
    152,671.66x = 210,690.27 × 84,686.42
  4. Step 4: Simplify right side
    152,671.66x = 17,842,605,221.86
  5. Step 5: Solve for x
    x = 17,842,605,221.86/152,671.66
  6. Step 6: Final answer
    x = 116,869.14

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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.