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Finding the Fourth Proportional to 14,339,152.20, 21,508,728.30 and 14,239,619.40

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Solution

The fourth proportional to 14,339,152.20, 21,508,728.30 and 14,239,619.40 is: 21,359,429.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,339,152.20 : 21,508,728.30 = 14,239,619.40 : x
  2. Step 2: Convert to fraction form
    14,339,152.20/21,508,728.30 = 14,239,619.40/x
  3. Step 3: Cross multiply
    14,339,152.20x = 21,508,728.30 × 14,239,619.40
  4. Step 4: Simplify right side
    14,339,152.20x = 306,276,104,770,009.06
  5. Step 5: Solve for x
    x = 306,276,104,770,009.06/14,339,152.20
  6. Step 6: Final answer
    x = 21,359,429.10

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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.