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Finding the Fourth Proportional to 527,534.73, 727,992.21 and 285,802.89

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Solution

The fourth proportional to 527,534.73, 727,992.21 and 285,802.89 is: 394,404.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,534.73 : 727,992.21 = 285,802.89 : x
  2. Step 2: Convert to fraction form
    527,534.73/727,992.21 = 285,802.89/x
  3. Step 3: Cross multiply
    527,534.73x = 727,992.21 × 285,802.89
  4. Step 4: Simplify right side
    527,534.73x = 208,062,277,515.49
  5. Step 5: Solve for x
    x = 208,062,277,515.49/527,534.73
  6. Step 6: Final answer
    x = 394,404.89

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1.5x scale

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.