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Finding the Fourth Proportional to 626,101.86, 864,020.70 and 354,163.98

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Solution

The fourth proportional to 626,101.86, 864,020.70 and 354,163.98 is: 488,746.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,101.86 : 864,020.70 = 354,163.98 : x
  2. Step 2: Convert to fraction form
    626,101.86/864,020.70 = 354,163.98/x
  3. Step 3: Cross multiply
    626,101.86x = 864,020.70 × 354,163.98
  4. Step 4: Simplify right side
    626,101.86x = 306,005,009,914.39
  5. Step 5: Solve for x
    x = 306,005,009,914.39/626,101.86
  6. Step 6: Final answer
    x = 488,746.37

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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.