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Finding the Fourth Proportional to 472,556.60, 708,899.70 and 156,980.60

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Solution

The fourth proportional to 472,556.60, 708,899.70 and 156,980.60 is: 235,492.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,556.60 : 708,899.70 = 156,980.60 : x
  2. Step 2: Convert to fraction form
    472,556.60/708,899.70 = 156,980.60/x
  3. Step 3: Cross multiply
    472,556.60x = 708,899.70 × 156,980.60
  4. Step 4: Simplify right side
    472,556.60x = 111,283,500,245.82
  5. Step 5: Solve for x
    x = 111,283,500,245.82/472,556.60
  6. Step 6: Final answer
    x = 235,492.43

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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.