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Finding the Fourth Proportional to 99,280.53, 148,931.69 and 43,082.01

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Solution

The fourth proportional to 99,280.53, 148,931.69 and 43,082.01 is: 64,627.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,280.53 : 148,931.69 = 43,082.01 : x
  2. Step 2: Convert to fraction form
    99,280.53/148,931.69 = 43,082.01/x
  3. Step 3: Cross multiply
    99,280.53x = 148,931.69 × 43,082.01
  4. Step 4: Simplify right side
    99,280.53x = 6,416,276,342.49
  5. Step 5: Solve for x
    x = 6,416,276,342.49/99,280.53
  6. Step 6: Final answer
    x = 64,627.74

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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.