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Finding the Fourth Proportional to 628,477.76, 867,297.70 and 341,997.78

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Solution

The fourth proportional to 628,477.76, 867,297.70 and 341,997.78 is: 471,956.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,477.76 : 867,297.70 = 341,997.78 : x
  2. Step 2: Convert to fraction form
    628,477.76/867,297.70 = 341,997.78/x
  3. Step 3: Cross multiply
    628,477.76x = 867,297.70 × 341,997.78
  4. Step 4: Simplify right side
    628,477.76x = 296,613,887,999.11
  5. Step 5: Solve for x
    x = 296,613,887,999.11/628,477.76
  6. Step 6: Final answer
    x = 471,956.06

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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.