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Finding the Fourth Proportional to 238,693.68, 358,040.40 and 113,655.60

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Solution

The fourth proportional to 238,693.68, 358,040.40 and 113,655.60 is: 170,483.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,693.68 : 358,040.40 = 113,655.60 : x
  2. Step 2: Convert to fraction form
    238,693.68/358,040.40 = 113,655.60/x
  3. Step 3: Cross multiply
    238,693.68x = 358,040.40 × 113,655.60
  4. Step 4: Simplify right side
    238,693.68x = 40,693,296,486.24
  5. Step 5: Solve for x
    x = 40,693,296,486.24/238,693.68
  6. Step 6: Final answer
    x = 170,483.34

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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.