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Finding the Fourth Proportional to 628,665.66, 867,534.50 and 356,717.34

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Solution

The fourth proportional to 628,665.66, 867,534.50 and 356,717.34 is: 492,256.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,665.66 : 867,534.50 = 356,717.34 : x
  2. Step 2: Convert to fraction form
    628,665.66/867,534.50 = 356,717.34/x
  3. Step 3: Cross multiply
    628,665.66x = 867,534.50 × 356,717.34
  4. Step 4: Simplify right side
    628,665.66x = 309,464,599,198.23
  5. Step 5: Solve for x
    x = 309,464,599,198.23/628,665.66
  6. Step 6: Final answer
    x = 492,256.25

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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.