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Finding the Fourth Proportional to 1,173,216, 1,619,038.08 and 636,672

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Solution

The fourth proportional to 1,173,216, 1,619,038.08 and 636,672 is: 878,607.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173,216 : 1,619,038.08 = 636,672 : x
  2. Step 2: Convert to fraction form
    1,173,216/1,619,038.08 = 636,672/x
  3. Step 3: Cross multiply
    1,173,216x = 1,619,038.08 × 636,672
  4. Step 4: Simplify right side
    1,173,216x = 1,030,796,212,469.76
  5. Step 5: Solve for x
    x = 1,030,796,212,469.76/1,173,216
  6. Step 6: Final answer
    x = 878,607.36

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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.