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Finding the Fourth Proportional to 622,611.36, 859,145.40 and 367,913.88

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Solution

The fourth proportional to 622,611.36, 859,145.40 and 367,913.88 is: 507,686.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,611.36 : 859,145.40 = 367,913.88 : x
  2. Step 2: Convert to fraction form
    622,611.36/859,145.40 = 367,913.88/x
  3. Step 3: Cross multiply
    622,611.36x = 859,145.40 × 367,913.88
  4. Step 4: Simplify right side
    622,611.36x = 316,091,517,598.15
  5. Step 5: Solve for x
    x = 316,091,517,598.15/622,611.36
  6. Step 6: Final answer
    x = 507,686.72

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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.