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Finding the Fourth Proportional to 14,707.80, 22,061.70 and 9,143.10

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Solution

The fourth proportional to 14,707.80, 22,061.70 and 9,143.10 is: 13,714.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,707.80 : 22,061.70 = 9,143.10 : x
  2. Step 2: Convert to fraction form
    14,707.80/22,061.70 = 9,143.10/x
  3. Step 3: Cross multiply
    14,707.80x = 22,061.70 × 9,143.10
  4. Step 4: Simplify right side
    14,707.80x = 201,712,329.27
  5. Step 5: Solve for x
    x = 201,712,329.27/14,707.80
  6. Step 6: Final answer
    x = 13,714.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.