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Finding the Fourth Proportional to 8,596,713.30, 12,876,407.55 and 7,103,721.30

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Solution

The fourth proportional to 8,596,713.30, 12,876,407.55 and 7,103,721.30 is: 10,640,160.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,596,713.30 : 12,876,407.55 = 7,103,721.30 : x
  2. Step 2: Convert to fraction form
    8,596,713.30/12,876,407.55 = 7,103,721.30/x
  3. Step 3: Cross multiply
    8,596,713.30x = 12,876,407.55 × 7,103,721.30
  4. Step 4: Simplify right side
    8,596,713.30x = 91,470,410,580,415.81
  5. Step 5: Solve for x
    x = 91,470,410,580,415.81/8,596,713.30
  6. Step 6: Final answer
    x = 10,640,160.65

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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.