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Finding the Fourth Proportional to 22,702.76, 31,329.02 and 12,492.83

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Solution

The fourth proportional to 22,702.76, 31,329.02 and 12,492.83 is: 17,239.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,702.76 : 31,329.02 = 12,492.83 : x
  2. Step 2: Convert to fraction form
    22,702.76/31,329.02 = 12,492.83/x
  3. Step 3: Cross multiply
    22,702.76x = 31,329.02 × 12,492.83
  4. Step 4: Simplify right side
    22,702.76x = 391,388,160.21
  5. Step 5: Solve for x
    x = 391,388,160.21/22,702.76
  6. Step 6: Final answer
    x = 17,239.67

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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.