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Finding the Fourth Proportional to 570,803.68, 788,238.56 and 427,314.64

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Solution

The fourth proportional to 570,803.68, 788,238.56 and 427,314.64 is: 590,090.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,803.68 : 788,238.56 = 427,314.64 : x
  2. Step 2: Convert to fraction form
    570,803.68/788,238.56 = 427,314.64/x
  3. Step 3: Cross multiply
    570,803.68x = 788,238.56 × 427,314.64
  4. Step 4: Simplify right side
    570,803.68x = 336,825,876,500.52
  5. Step 5: Solve for x
    x = 336,825,876,500.52/570,803.68
  6. Step 6: Final answer
    x = 590,090.58

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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.