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Finding the Fourth Proportional to 15,792.63, 21,793.23 and 9,503.79

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Solution

The fourth proportional to 15,792.63, 21,793.23 and 9,503.79 is: 13,114.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,792.63 : 21,793.23 = 9,503.79 : x
  2. Step 2: Convert to fraction form
    15,792.63/21,793.23 = 9,503.79/x
  3. Step 3: Cross multiply
    15,792.63x = 21,793.23 × 9,503.79
  4. Step 4: Simplify right side
    15,792.63x = 207,118,281.34
  5. Step 5: Solve for x
    x = 207,118,281.34/15,792.63
  6. Step 6: Final answer
    x = 13,114.87

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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.