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Finding the Fourth Proportional to 22,409.65, 30,934.88 and 15,953.45

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Solution

The fourth proportional to 22,409.65, 30,934.88 and 15,953.45 is: 22,022.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,409.65 : 30,934.88 = 15,953.45 : x
  2. Step 2: Convert to fraction form
    22,409.65/30,934.88 = 15,953.45/x
  3. Step 3: Cross multiply
    22,409.65x = 30,934.88 × 15,953.45
  4. Step 4: Simplify right side
    22,409.65x = 493,518,061.34
  5. Step 5: Solve for x
    x = 493,518,061.34/22,409.65
  6. Step 6: Final answer
    x = 22,022.57

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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.