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Finding the Fourth Proportional to 7,338,411.10, 11,007,616.65 and 1,947,051.10

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Solution

The fourth proportional to 7,338,411.10, 11,007,616.65 and 1,947,051.10 is: 2,920,576.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,338,411.10 : 11,007,616.65 = 1,947,051.10 : x
  2. Step 2: Convert to fraction form
    7,338,411.10/11,007,616.65 = 1,947,051.10/x
  3. Step 3: Cross multiply
    7,338,411.10x = 11,007,616.65 × 1,947,051.10
  4. Step 4: Simplify right side
    7,338,411.10x = 21,432,392,106,760.82
  5. Step 5: Solve for x
    x = 21,432,392,106,760.82/7,338,411.10
  6. Step 6: Final answer
    x = 2,920,576.65

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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.