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Finding the Fourth Proportional to 939,695.88, 1,297,856.88 and 618,840.12

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Solution

The fourth proportional to 939,695.88, 1,297,856.88 and 618,840.12 is: 854,708.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,695.88 : 1,297,856.88 = 618,840.12 : x
  2. Step 2: Convert to fraction form
    939,695.88/1,297,856.88 = 618,840.12/x
  3. Step 3: Cross multiply
    939,695.88x = 1,297,856.88 × 618,840.12
  4. Step 4: Simplify right side
    939,695.88x = 803,165,907,362.03
  5. Step 5: Solve for x
    x = 803,165,907,362.03/939,695.88
  6. Step 6: Final answer
    x = 854,708.34

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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.