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Finding the Fourth Proportional to 111,861.77, 154,369.76 and 64,117.91

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Solution

The fourth proportional to 111,861.77, 154,369.76 and 64,117.91 is: 88,483.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,861.77 : 154,369.76 = 64,117.91 : x
  2. Step 2: Convert to fraction form
    111,861.77/154,369.76 = 64,117.91/x
  3. Step 3: Cross multiply
    111,861.77x = 154,369.76 × 64,117.91
  4. Step 4: Simplify right side
    111,861.77x = 9,897,866,378.40
  5. Step 5: Solve for x
    x = 9,897,866,378.40/111,861.77
  6. Step 6: Final answer
    x = 88,483.01

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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.