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Finding the Fourth Proportional to 6,663,322.79, 9,995,594.13 and 1,870,979.72

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Solution

The fourth proportional to 6,663,322.79, 9,995,594.13 and 1,870,979.72 is: 2,806,640.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,663,322.79 : 9,995,594.13 = 1,870,979.72 : x
  2. Step 2: Convert to fraction form
    6,663,322.79/9,995,594.13 = 1,870,979.72/x
  3. Step 3: Cross multiply
    6,663,322.79x = 9,995,594.13 × 1,870,979.72
  4. Step 4: Simplify right side
    6,663,322.79x = 18,701,553,856,603.07
  5. Step 5: Solve for x
    x = 18,701,553,856,603.07/6,663,322.79
  6. Step 6: Final answer
    x = 2,806,640.84

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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.