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Finding the Fourth Proportional to 626,127.78, 864,056.62 and 354,189.88

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Solution

The fourth proportional to 626,127.78, 864,056.62 and 354,189.88 is: 488,782.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,127.78 : 864,056.62 = 354,189.88 : x
  2. Step 2: Convert to fraction form
    626,127.78/864,056.62 = 354,189.88/x
  3. Step 3: Cross multiply
    626,127.78x = 864,056.62 × 354,189.88
  4. Step 4: Simplify right side
    626,127.78x = 306,040,112,073.81
  5. Step 5: Solve for x
    x = 306,040,112,073.81/626,127.78
  6. Step 6: Final answer
    x = 488,782.19

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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.