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Finding the Fourth Proportional to 111,861.60, 154,368.96 and 61,560.60

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Solution

The fourth proportional to 111,861.60, 154,368.96 and 61,560.60 is: 84,953.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,861.60 : 154,368.96 = 61,560.60 : x
  2. Step 2: Convert to fraction form
    111,861.60/154,368.96 = 61,560.60/x
  3. Step 3: Cross multiply
    111,861.60x = 154,368.96 × 61,560.60
  4. Step 4: Simplify right side
    111,861.60x = 9,503,045,798.98
  5. Step 5: Solve for x
    x = 9,503,045,798.98/111,861.60
  6. Step 6: Final answer
    x = 84,953.60

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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.