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Finding the Fourth Proportional to 94,140.70, 141,211.05 and 31,810.30

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Solution

The fourth proportional to 94,140.70, 141,211.05 and 31,810.30 is: 47,715.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,140.70 : 141,211.05 = 31,810.30 : x
  2. Step 2: Convert to fraction form
    94,140.70/141,211.05 = 31,810.30/x
  3. Step 3: Cross multiply
    94,140.70x = 141,211.05 × 31,810.30
  4. Step 4: Simplify right side
    94,140.70x = 4,491,965,863.82
  5. Step 5: Solve for x
    x = 4,491,965,863.82/94,140.70
  6. Step 6: Final answer
    x = 47,715.45

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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.