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Finding the Fourth Proportional to 6,642,915.70, 9,964,373.55 and 6,076,045.30

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Solution

The fourth proportional to 6,642,915.70, 9,964,373.55 and 6,076,045.30 is: 9,114,067.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642,915.70 : 9,964,373.55 = 6,076,045.30 : x
  2. Step 2: Convert to fraction form
    6,642,915.70/9,964,373.55 = 6,076,045.30/x
  3. Step 3: Cross multiply
    6,642,915.70x = 9,964,373.55 × 6,076,045.30
  4. Step 4: Simplify right side
    6,642,915.70x = 60,543,985,075,921.82
  5. Step 5: Solve for x
    x = 60,543,985,075,921.82/6,642,915.70
  6. Step 6: Final answer
    x = 9,114,067.95

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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.