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Finding the Fourth Proportional to 527,876.19, 791,647.53 and 172,808.54

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Solution

The fourth proportional to 527,876.19, 791,647.53 and 172,808.54 is: 259,158.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,876.19 : 791,647.53 = 172,808.54 : x
  2. Step 2: Convert to fraction form
    527,876.19/791,647.53 = 172,808.54/x
  3. Step 3: Cross multiply
    527,876.19x = 791,647.53 × 172,808.54
  4. Step 4: Simplify right side
    527,876.19x = 136,803,452,216.32
  5. Step 5: Solve for x
    x = 136,803,452,216.32/527,876.19
  6. Step 6: Final answer
    x = 259,158.22

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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.