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Finding the Fourth Proportional to 1,238,375.81, 1,708,971 and 694,499.93

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Solution

The fourth proportional to 1,238,375.81, 1,708,971 and 694,499.93 is: 958,416.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,375.81 : 1,708,971 = 694,499.93 : x
  2. Step 2: Convert to fraction form
    1,238,375.81/1,708,971 = 694,499.93/x
  3. Step 3: Cross multiply
    1,238,375.81x = 1,708,971 × 694,499.93
  4. Step 4: Simplify right side
    1,238,375.81x = 1,186,880,239,872.03
  5. Step 5: Solve for x
    x = 1,186,880,239,872.03/1,238,375.81
  6. Step 6: Final answer
    x = 958,416.85

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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.