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Finding the Fourth Proportional to 360,085.50, 496,918.80 and 216,851.58

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Solution

The fourth proportional to 360,085.50, 496,918.80 and 216,851.58 is: 299,255.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,085.50 : 496,918.80 = 216,851.58 : x
  2. Step 2: Convert to fraction form
    360,085.50/496,918.80 = 216,851.58/x
  3. Step 3: Cross multiply
    360,085.50x = 496,918.80 × 216,851.58
  4. Step 4: Simplify right side
    360,085.50x = 107,757,626,911.70
  5. Step 5: Solve for x
    x = 107,757,626,911.70/360,085.50
  6. Step 6: Final answer
    x = 299,255.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.