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Finding the Fourth Proportional to 156,093.65, 215,409.90 and 84,473.66

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Solution

The fourth proportional to 156,093.65, 215,409.90 and 84,473.66 is: 116,574.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,093.65 : 215,409.90 = 84,473.66 : x
  2. Step 2: Convert to fraction form
    156,093.65/215,409.90 = 84,473.66/x
  3. Step 3: Cross multiply
    156,093.65x = 215,409.90 × 84,473.66
  4. Step 4: Simplify right side
    156,093.65x = 18,196,462,653.23
  5. Step 5: Solve for x
    x = 18,196,462,653.23/156,093.65
  6. Step 6: Final answer
    x = 116,574.01

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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.