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Finding the Fourth Proportional to 6,978,006.76, 9,628,237.66 and 4,076,837.32

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Solution

The fourth proportional to 6,978,006.76, 9,628,237.66 and 4,076,837.32 is: 5,625,210.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,978,006.76 : 9,628,237.66 = 4,076,837.32 : x
  2. Step 2: Convert to fraction form
    6,978,006.76/9,628,237.66 = 4,076,837.32/x
  3. Step 3: Cross multiply
    6,978,006.76x = 9,628,237.66 × 4,076,837.32
  4. Step 4: Simplify right side
    6,978,006.76x = 39,252,758,618,117.47
  5. Step 5: Solve for x
    x = 39,252,758,618,117.47/6,978,006.76
  6. Step 6: Final answer
    x = 5,625,210.75

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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.