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Finding the Fourth Proportional to 66,492.59, 99,785.64 and 60,140.16

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Solution

The fourth proportional to 66,492.59, 99,785.64 and 60,140.16 is: 90,252.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,492.59 : 99,785.64 = 60,140.16 : x
  2. Step 2: Convert to fraction form
    66,492.59/99,785.64 = 60,140.16/x
  3. Step 3: Cross multiply
    66,492.59x = 99,785.64 × 60,140.16
  4. Step 4: Simplify right side
    66,492.59x = 6,001,124,355.30
  5. Step 5: Solve for x
    x = 6,001,124,355.30/66,492.59
  6. Step 6: Final answer
    x = 90,252.54

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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.