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Finding the Fourth Proportional to 56,977.74, 78,568.92 and 39,098.88

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Solution

The fourth proportional to 56,977.74, 78,568.92 and 39,098.88 is: 53,915.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,977.74 : 78,568.92 = 39,098.88 : x
  2. Step 2: Convert to fraction form
    56,977.74/78,568.92 = 39,098.88/x
  3. Step 3: Cross multiply
    56,977.74x = 78,568.92 × 39,098.88
  4. Step 4: Simplify right side
    56,977.74x = 3,071,956,774.81
  5. Step 5: Solve for x
    x = 3,071,956,774.81/56,977.74
  6. Step 6: Final answer
    x = 53,915.03

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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.