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Finding the Fourth Proportional to 527,717.85, 728,248.77 and 286,006.29

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Solution

The fourth proportional to 527,717.85, 728,248.77 and 286,006.29 is: 394,687.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,717.85 : 728,248.77 = 286,006.29 : x
  2. Step 2: Convert to fraction form
    527,717.85/728,248.77 = 286,006.29/x
  3. Step 3: Cross multiply
    527,717.85x = 728,248.77 × 286,006.29
  4. Step 4: Simplify right side
    527,717.85x = 208,283,728,904.76
  5. Step 5: Solve for x
    x = 208,283,728,904.76/527,717.85
  6. Step 6: Final answer
    x = 394,687.67

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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.