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Finding the Fourth Proportional to 82,045.53, 123,068.30 and 25,885.80

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Solution

The fourth proportional to 82,045.53, 123,068.30 and 25,885.80 is: 38,828.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,045.53 : 123,068.30 = 25,885.80 : x
  2. Step 2: Convert to fraction form
    82,045.53/123,068.30 = 25,885.80/x
  3. Step 3: Cross multiply
    82,045.53x = 123,068.30 × 25,885.80
  4. Step 4: Simplify right side
    82,045.53x = 3,185,721,270.71
  5. Step 5: Solve for x
    x = 3,185,721,270.71/82,045.53
  6. Step 6: Final answer
    x = 38,828.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.