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Finding the Fourth Proportional to 99,706.92, 137,595.62 and 57,268.20

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Solution

The fourth proportional to 99,706.92, 137,595.62 and 57,268.20 is: 79,030.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,706.92 : 137,595.62 = 57,268.20 : x
  2. Step 2: Convert to fraction form
    99,706.92/137,595.62 = 57,268.20/x
  3. Step 3: Cross multiply
    99,706.92x = 137,595.62 × 57,268.20
  4. Step 4: Simplify right side
    99,706.92x = 7,879,853,485.28
  5. Step 5: Solve for x
    x = 7,879,853,485.28/99,706.92
  6. Step 6: Final answer
    x = 79,030.16

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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.