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Finding the Fourth Proportional to 104,809.20, 157,213.80 and 73,316.40

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Solution

The fourth proportional to 104,809.20, 157,213.80 and 73,316.40 is: 109,974.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,809.20 : 157,213.80 = 73,316.40 : x
  2. Step 2: Convert to fraction form
    104,809.20/157,213.80 = 73,316.40/x
  3. Step 3: Cross multiply
    104,809.20x = 157,213.80 × 73,316.40
  4. Step 4: Simplify right side
    104,809.20x = 11,526,349,846.32
  5. Step 5: Solve for x
    x = 11,526,349,846.32/104,809.20
  6. Step 6: Final answer
    x = 109,974.60

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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.