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Finding the Fourth Proportional to 112,217.94, 154,861.29 and 61,916.94

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Solution

The fourth proportional to 112,217.94, 154,861.29 and 61,916.94 is: 85,445.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,217.94 : 154,861.29 = 61,916.94 : x
  2. Step 2: Convert to fraction form
    112,217.94/154,861.29 = 61,916.94/x
  3. Step 3: Cross multiply
    112,217.94x = 154,861.29 × 61,916.94
  4. Step 4: Simplify right side
    112,217.94x = 9,588,537,201.25
  5. Step 5: Solve for x
    x = 9,588,537,201.25/112,217.94
  6. Step 6: Final answer
    x = 85,445.67

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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.