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Finding the Fourth Proportional to 612,076, 844,765.05 and 509,939.50

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Solution

The fourth proportional to 612,076, 844,765.05 and 509,939.50 is: 703,799.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,076 : 844,765.05 = 509,939.50 : x
  2. Step 2: Convert to fraction form
    612,076/844,765.05 = 509,939.50/x
  3. Step 3: Cross multiply
    612,076x = 844,765.05 × 509,939.50
  4. Step 4: Simplify right side
    612,076x = 430,779,067,214.48
  5. Step 5: Solve for x
    x = 430,779,067,214.48/612,076
  6. Step 6: Final answer
    x = 703,799.96

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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.