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Finding the Fourth Proportional to 356,648.30, 534,779.27 and 156,734.66

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Solution

The fourth proportional to 356,648.30, 534,779.27 and 156,734.66 is: 235,017.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,648.30 : 534,779.27 = 156,734.66 : x
  2. Step 2: Convert to fraction form
    356,648.30/534,779.27 = 156,734.66/x
  3. Step 3: Cross multiply
    356,648.30x = 534,779.27 × 156,734.66
  4. Step 4: Simplify right side
    356,648.30x = 83,818,447,058.50
  5. Step 5: Solve for x
    x = 83,818,447,058.50/356,648.30
  6. Step 6: Final answer
    x = 235,017.09

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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.