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Finding the Fourth Proportional to 213,079.40, 319,619.10 and 175,025.60

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Solution

The fourth proportional to 213,079.40, 319,619.10 and 175,025.60 is: 262,538.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,079.40 : 319,619.10 = 175,025.60 : x
  2. Step 2: Convert to fraction form
    213,079.40/319,619.10 = 175,025.60/x
  3. Step 3: Cross multiply
    213,079.40x = 319,619.10 × 175,025.60
  4. Step 4: Simplify right side
    213,079.40x = 55,941,524,748.96
  5. Step 5: Solve for x
    x = 55,941,524,748.96/213,079.40
  6. Step 6: Final answer
    x = 262,538.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.