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Finding the Fourth Proportional to 93,121.09, 139,710.80 and 59,878.69

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Solution

The fourth proportional to 93,121.09, 139,710.80 and 59,878.69 is: 89,836.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,121.09 : 139,710.80 = 59,878.69 : x
  2. Step 2: Convert to fraction form
    93,121.09/139,710.80 = 59,878.69/x
  3. Step 3: Cross multiply
    93,121.09x = 139,710.80 × 59,878.69
  4. Step 4: Simplify right side
    93,121.09x = 8,365,699,483.27
  5. Step 5: Solve for x
    x = 8,365,699,483.27/93,121.09
  6. Step 6: Final answer
    x = 89,836.79

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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.