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Finding the Fourth Proportional to 172,993.12, 238,730.40 and 93,505.12

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Solution

The fourth proportional to 172,993.12, 238,730.40 and 93,505.12 is: 129,037.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,993.12 : 238,730.40 = 93,505.12 : x
  2. Step 2: Convert to fraction form
    172,993.12/238,730.40 = 93,505.12/x
  3. Step 3: Cross multiply
    172,993.12x = 238,730.40 × 93,505.12
  4. Step 4: Simplify right side
    172,993.12x = 22,322,514,699.65
  5. Step 5: Solve for x
    x = 22,322,514,699.65/172,993.12
  6. Step 6: Final answer
    x = 129,037.01

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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.