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Finding the Fourth Proportional to 104,984.45, 157,430.50 and 38,407.31

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Solution

The fourth proportional to 104,984.45, 157,430.50 and 38,407.31 is: 57,594.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,984.45 : 157,430.50 = 38,407.31 : x
  2. Step 2: Convert to fraction form
    104,984.45/157,430.50 = 38,407.31/x
  3. Step 3: Cross multiply
    104,984.45x = 157,430.50 × 38,407.31
  4. Step 4: Simplify right side
    104,984.45x = 6,046,482,016.96
  5. Step 5: Solve for x
    x = 6,046,482,016.96/104,984.45
  6. Step 6: Final answer
    x = 57,594.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.