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Finding the Fourth Proportional to 546,138.58, 753,994.50 and 485,541.85

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Solution

The fourth proportional to 546,138.58, 753,994.50 and 485,541.85 is: 670,335.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,138.58 : 753,994.50 = 485,541.85 : x
  2. Step 2: Convert to fraction form
    546,138.58/753,994.50 = 485,541.85/x
  3. Step 3: Cross multiply
    546,138.58x = 753,994.50 × 485,541.85
  4. Step 4: Simplify right side
    546,138.58x = 366,095,884,419.83
  5. Step 5: Solve for x
    x = 366,095,884,419.83/546,138.58
  6. Step 6: Final answer
    x = 670,335.15

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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.