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Finding the Fourth Proportional to 152,809.64, 210,899.23 and 91,558.25

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Solution

The fourth proportional to 152,809.64, 210,899.23 and 91,558.25 is: 126,363.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,809.64 : 210,899.23 = 91,558.25 : x
  2. Step 2: Convert to fraction form
    152,809.64/210,899.23 = 91,558.25/x
  3. Step 3: Cross multiply
    152,809.64x = 210,899.23 × 91,558.25
  4. Step 4: Simplify right side
    152,809.64x = 19,309,563,370.65
  5. Step 5: Solve for x
    x = 19,309,563,370.65/152,809.64
  6. Step 6: Final answer
    x = 126,363.52

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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.