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Finding the Fourth Proportional to 56,460.53, 77,915.53 and 31,310.03

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Solution

The fourth proportional to 56,460.53, 77,915.53 and 31,310.03 is: 43,207.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,460.53 : 77,915.53 = 31,310.03 : x
  2. Step 2: Convert to fraction form
    56,460.53/77,915.53 = 31,310.03/x
  3. Step 3: Cross multiply
    56,460.53x = 77,915.53 × 31,310.03
  4. Step 4: Simplify right side
    56,460.53x = 2,439,537,581.77
  5. Step 5: Solve for x
    x = 2,439,537,581.77/56,460.53
  6. Step 6: Final answer
    x = 43,207.84

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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.