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Finding the Fourth Proportional to 94,141.78, 129,915.70 and 51,702.90

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Solution

The fourth proportional to 94,141.78, 129,915.70 and 51,702.90 is: 71,350.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,141.78 : 129,915.70 = 51,702.90 : x
  2. Step 2: Convert to fraction form
    94,141.78/129,915.70 = 51,702.90/x
  3. Step 3: Cross multiply
    94,141.78x = 129,915.70 × 51,702.90
  4. Step 4: Simplify right side
    94,141.78x = 6,717,018,445.53
  5. Step 5: Solve for x
    x = 6,717,018,445.53/94,141.78
  6. Step 6: Final answer
    x = 71,350.03

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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.