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Finding the Fourth Proportional to 105,003.80, 157,505.70 and 65,637.80

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Solution

The fourth proportional to 105,003.80, 157,505.70 and 65,637.80 is: 98,456.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,003.80 : 157,505.70 = 65,637.80 : x
  2. Step 2: Convert to fraction form
    105,003.80/157,505.70 = 65,637.80/x
  3. Step 3: Cross multiply
    105,003.80x = 157,505.70 × 65,637.80
  4. Step 4: Simplify right side
    105,003.80x = 10,338,327,635.46
  5. Step 5: Solve for x
    x = 10,338,327,635.46/105,003.80
  6. Step 6: Final answer
    x = 98,456.70

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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.