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Finding the Fourth Proportional to 158,859.96, 219,257.80 and 98,457.45

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Solution

The fourth proportional to 158,859.96, 219,257.80 and 98,457.45 is: 135,890.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,859.96 : 219,257.80 = 98,457.45 : x
  2. Step 2: Convert to fraction form
    158,859.96/219,257.80 = 98,457.45/x
  3. Step 3: Cross multiply
    158,859.96x = 219,257.80 × 98,457.45
  4. Step 4: Simplify right side
    158,859.96x = 21,587,563,567.37
  5. Step 5: Solve for x
    x = 21,587,563,567.37/158,859.96
  6. Step 6: Final answer
    x = 135,890.53

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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.