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Finding the Fourth Proportional to 1,112,928, 1,535,840.64 and 636,000

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Solution

The fourth proportional to 1,112,928, 1,535,840.64 and 636,000 is: 877,680.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112,928 : 1,535,840.64 = 636,000 : x
  2. Step 2: Convert to fraction form
    1,112,928/1,535,840.64 = 636,000/x
  3. Step 3: Cross multiply
    1,112,928x = 1,535,840.64 × 636,000
  4. Step 4: Simplify right side
    1,112,928x = 976,794,647,040.00
  5. Step 5: Solve for x
    x = 976,794,647,040.00/1,112,928
  6. Step 6: Final answer
    x = 877,680.00

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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.