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Finding the Fourth Proportional to 576,052.60, 864,078.90 and 543,393.40

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Solution

The fourth proportional to 576,052.60, 864,078.90 and 543,393.40 is: 815,090.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,052.60 : 864,078.90 = 543,393.40 : x
  2. Step 2: Convert to fraction form
    576,052.60/864,078.90 = 543,393.40/x
  3. Step 3: Cross multiply
    576,052.60x = 864,078.90 × 543,393.40
  4. Step 4: Simplify right side
    576,052.60x = 469,534,771,339.26
  5. Step 5: Solve for x
    x = 469,534,771,339.26/576,052.60
  6. Step 6: Final answer
    x = 815,090.10

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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.