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Finding the Fourth Proportional to 217,915.76, 300,028.57 and 185,956.40

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Solution

The fourth proportional to 217,915.76, 300,028.57 and 185,956.40 is: 256,026.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,915.76 : 300,028.57 = 185,956.40 : x
  2. Step 2: Convert to fraction form
    217,915.76/300,028.57 = 185,956.40/x
  3. Step 3: Cross multiply
    217,915.76x = 300,028.57 × 185,956.40
  4. Step 4: Simplify right side
    217,915.76x = 55,792,230,809.31
  5. Step 5: Solve for x
    x = 55,792,230,809.31/217,915.76
  6. Step 6: Final answer
    x = 256,026.60

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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.