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Finding the Fourth Proportional to 6,449,460.31, 8,899,987.98 and 3,509,289.55

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Solution

The fourth proportional to 6,449,460.31, 8,899,987.98 and 3,509,289.55 is: 4,842,674.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,449,460.31 : 8,899,987.98 = 3,509,289.55 : x
  2. Step 2: Convert to fraction form
    6,449,460.31/8,899,987.98 = 3,509,289.55/x
  3. Step 3: Cross multiply
    6,449,460.31x = 8,899,987.98 × 3,509,289.55
  4. Step 4: Simplify right side
    6,449,460.31x = 31,232,634,813,339.61
  5. Step 5: Solve for x
    x = 31,232,634,813,339.61/6,449,460.31
  6. Step 6: Final answer
    x = 4,842,674.16

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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.