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Finding the Fourth Proportional to 527,503.16, 727,954.53 and 285,787.40

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Solution

The fourth proportional to 527,503.16, 727,954.53 and 285,787.40 is: 394,386.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,503.16 : 727,954.53 = 285,787.40 : x
  2. Step 2: Convert to fraction form
    527,503.16/727,954.53 = 285,787.40/x
  3. Step 3: Cross multiply
    527,503.16x = 727,954.53 × 285,787.40
  4. Step 4: Simplify right side
    527,503.16x = 208,040,232,446.92
  5. Step 5: Solve for x
    x = 208,040,232,446.92/527,503.16
  6. Step 6: Final answer
    x = 394,386.70

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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.