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Finding the Fourth Proportional to 99,071.52, 148,492.83 and 45,651.81

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Solution

The fourth proportional to 99,071.52, 148,492.83 and 45,651.81 is: 68,424.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,071.52 : 148,492.83 = 45,651.81 : x
  2. Step 2: Convert to fraction form
    99,071.52/148,492.83 = 45,651.81/x
  3. Step 3: Cross multiply
    99,071.52x = 148,492.83 × 45,651.81
  4. Step 4: Simplify right side
    99,071.52x = 6,778,966,461.52
  5. Step 5: Solve for x
    x = 6,778,966,461.52/99,071.52
  6. Step 6: Final answer
    x = 68,424.98

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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.