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Finding the Fourth Proportional to 259,477.12, 358,079.04 and 140,245.12

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Solution

The fourth proportional to 259,477.12, 358,079.04 and 140,245.12 is: 193,538.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,477.12 : 358,079.04 = 140,245.12 : x
  2. Step 2: Convert to fraction form
    259,477.12/358,079.04 = 140,245.12/x
  3. Step 3: Cross multiply
    259,477.12x = 358,079.04 × 140,245.12
  4. Step 4: Simplify right side
    259,477.12x = 50,218,837,934.28
  5. Step 5: Solve for x
    x = 50,218,837,934.28/259,477.12
  6. Step 6: Final answer
    x = 193,538.60

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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.