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Finding the Fourth Proportional to 107,064.68, 147,717.54 and 64,605.80

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Solution

The fourth proportional to 107,064.68, 147,717.54 and 64,605.80 is: 89,136.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,064.68 : 147,717.54 = 64,605.80 : x
  2. Step 2: Convert to fraction form
    107,064.68/147,717.54 = 64,605.80/x
  3. Step 3: Cross multiply
    107,064.68x = 147,717.54 × 64,605.80
  4. Step 4: Simplify right side
    107,064.68x = 9,543,409,845.73
  5. Step 5: Solve for x
    x = 9,543,409,845.73/107,064.68
  6. Step 6: Final answer
    x = 89,136.86

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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.