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Finding the Fourth Proportional to 100,555.83, 150,825.89 and 47,259.45

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Solution

The fourth proportional to 100,555.83, 150,825.89 and 47,259.45 is: 70,885.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,555.83 : 150,825.89 = 47,259.45 : x
  2. Step 2: Convert to fraction form
    100,555.83/150,825.89 = 47,259.45/x
  3. Step 3: Cross multiply
    100,555.83x = 150,825.89 × 47,259.45
  4. Step 4: Simplify right side
    100,555.83x = 7,127,948,725.31
  5. Step 5: Solve for x
    x = 7,127,948,725.31/100,555.83
  6. Step 6: Final answer
    x = 70,885.48

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1.5x scale

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.