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Finding the Fourth Proportional to 107,053.92, 147,704.22 and 61,728.32

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Solution

The fourth proportional to 107,053.92, 147,704.22 and 61,728.32 is: 85,167.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,053.92 : 147,704.22 = 61,728.32 : x
  2. Step 2: Convert to fraction form
    107,053.92/147,704.22 = 61,728.32/x
  3. Step 3: Cross multiply
    107,053.92x = 147,704.22 × 61,728.32
  4. Step 4: Simplify right side
    107,053.92x = 9,117,533,357.51
  5. Step 5: Solve for x
    x = 9,117,533,357.51/107,053.92
  6. Step 6: Final answer
    x = 85,167.67

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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.