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Finding the Fourth Proportional to 99,635.48, 137,485.80 and 59,343.56

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Solution

The fourth proportional to 99,635.48, 137,485.80 and 59,343.56 is: 81,887.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,635.48 : 137,485.80 = 59,343.56 : x
  2. Step 2: Convert to fraction form
    99,635.48/137,485.80 = 59,343.56/x
  3. Step 3: Cross multiply
    99,635.48x = 137,485.80 × 59,343.56
  4. Step 4: Simplify right side
    99,635.48x = 8,158,896,821.45
  5. Step 5: Solve for x
    x = 8,158,896,821.45/99,635.48
  6. Step 6: Final answer
    x = 81,887.46

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1.5x scale

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.