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Finding the Fourth Proportional to 355,459.10, 532,313.85 and 236,486.30

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Solution

The fourth proportional to 355,459.10, 532,313.85 and 236,486.30 is: 354,147.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,459.10 : 532,313.85 = 236,486.30 : x
  2. Step 2: Convert to fraction form
    355,459.10/532,313.85 = 236,486.30/x
  3. Step 3: Cross multiply
    355,459.10x = 532,313.85 × 236,486.30
  4. Step 4: Simplify right side
    355,459.10x = 125,884,932,825.26
  5. Step 5: Solve for x
    x = 125,884,932,825.26/355,459.10
  6. Step 6: Final answer
    x = 354,147.45

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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.