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Finding the Fourth Proportional to 107,115.68, 147,802.92 and 61,795.40

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Solution

The fourth proportional to 107,115.68, 147,802.92 and 61,795.40 is: 85,268.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,115.68 : 147,802.92 = 61,795.40 : x
  2. Step 2: Convert to fraction form
    107,115.68/147,802.92 = 61,795.40/x
  3. Step 3: Cross multiply
    107,115.68x = 147,802.92 × 61,795.40
  4. Step 4: Simplify right side
    107,115.68x = 9,133,540,562.57
  5. Step 5: Solve for x
    x = 9,133,540,562.57/107,115.68
  6. Step 6: Final answer
    x = 85,268.01

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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.