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Finding the Fourth Proportional to 15,092.84, 20,835.62 and 9,430.74

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Solution

The fourth proportional to 15,092.84, 20,835.62 and 9,430.74 is: 13,019.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,092.84 : 20,835.62 = 9,430.74 : x
  2. Step 2: Convert to fraction form
    15,092.84/20,835.62 = 9,430.74/x
  3. Step 3: Cross multiply
    15,092.84x = 20,835.62 × 9,430.74
  4. Step 4: Simplify right side
    15,092.84x = 196,495,267.81
  5. Step 5: Solve for x
    x = 196,495,267.81/15,092.84
  6. Step 6: Final answer
    x = 13,019.11

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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.