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Finding the Fourth Proportional to 527,005.89, 790,530.69 and 153,028.89

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Solution

The fourth proportional to 527,005.89, 790,530.69 and 153,028.89 is: 229,549.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,005.89 : 790,530.69 = 153,028.89 : x
  2. Step 2: Convert to fraction form
    527,005.89/790,530.69 = 153,028.89/x
  3. Step 3: Cross multiply
    527,005.89x = 790,530.69 × 153,028.89
  4. Step 4: Simplify right side
    527,005.89x = 120,974,034,001.63
  5. Step 5: Solve for x
    x = 120,974,034,001.63/527,005.89
  6. Step 6: Final answer
    x = 229,549.68

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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.