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Finding the Fourth Proportional to 235,983.40, 353,391.90 and 156,668.20

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Solution

The fourth proportional to 235,983.40, 353,391.90 and 156,668.20 is: 234,615.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,983.40 : 353,391.90 = 156,668.20 : x
  2. Step 2: Convert to fraction form
    235,983.40/353,391.90 = 156,668.20/x
  3. Step 3: Cross multiply
    235,983.40x = 353,391.90 × 156,668.20
  4. Step 4: Simplify right side
    235,983.40x = 55,365,272,867.58
  5. Step 5: Solve for x
    x = 55,365,272,867.58/235,983.40
  6. Step 6: Final answer
    x = 234,615.12

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1.5x scale

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.