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Finding the Fourth Proportional to 577,892.40, 865,672.20 and 400,599.60

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Solution

The fourth proportional to 577,892.40, 865,672.20 and 400,599.60 is: 600,090.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,892.40 : 865,672.20 = 400,599.60 : x
  2. Step 2: Convert to fraction form
    577,892.40/865,672.20 = 400,599.60/x
  3. Step 3: Cross multiply
    577,892.40x = 865,672.20 × 400,599.60
  4. Step 4: Simplify right side
    577,892.40x = 346,787,937,051.12
  5. Step 5: Solve for x
    x = 346,787,937,051.12/577,892.40
  6. Step 6: Final answer
    x = 600,090.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.