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Finding the Fourth Proportional to 6,424,679.48, 8,865,897.86 and 3,671,192.21

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Solution

The fourth proportional to 6,424,679.48, 8,865,897.86 and 3,671,192.21 is: 5,066,153.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,424,679.48 : 8,865,897.86 = 3,671,192.21 : x
  2. Step 2: Convert to fraction form
    6,424,679.48/8,865,897.86 = 3,671,192.21/x
  3. Step 3: Cross multiply
    6,424,679.48x = 8,865,897.86 × 3,671,192.21
  4. Step 4: Simplify right side
    6,424,679.48x = 32,548,415,158,287.67
  5. Step 5: Solve for x
    x = 32,548,415,158,287.67/6,424,679.48
  6. Step 6: Final answer
    x = 5,066,153.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.