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Finding the Fourth Proportional to 93,275.40, 139,836.86 and 43,386.60

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Solution

The fourth proportional to 93,275.40, 139,836.86 and 43,386.60 is: 65,044.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,275.40 : 139,836.86 = 43,386.60 : x
  2. Step 2: Convert to fraction form
    93,275.40/139,836.86 = 43,386.60/x
  3. Step 3: Cross multiply
    93,275.40x = 139,836.86 × 43,386.60
  4. Step 4: Simplify right side
    93,275.40x = 6,067,045,910.08
  5. Step 5: Solve for x
    x = 6,067,045,910.08/93,275.40
  6. Step 6: Final answer
    x = 65,044.44

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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.