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Finding the Fourth Proportional to 644,220.06, 888,958.71 and 376,103.58

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Solution

The fourth proportional to 644,220.06, 888,958.71 and 376,103.58 is: 518,985.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,220.06 : 888,958.71 = 376,103.58 : x
  2. Step 2: Convert to fraction form
    644,220.06/888,958.71 = 376,103.58/x
  3. Step 3: Cross multiply
    644,220.06x = 888,958.71 × 376,103.58
  4. Step 4: Simplify right side
    644,220.06x = 334,340,553,303.18
  5. Step 5: Solve for x
    x = 334,340,553,303.18/644,220.06
  6. Step 6: Final answer
    x = 518,985.01

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1.5x scale

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.