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Finding the Fourth Proportional to 93,323.40, 139,985.10 and 63,385.80

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Solution

The fourth proportional to 93,323.40, 139,985.10 and 63,385.80 is: 95,078.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,323.40 : 139,985.10 = 63,385.80 : x
  2. Step 2: Convert to fraction form
    93,323.40/139,985.10 = 63,385.80/x
  3. Step 3: Cross multiply
    93,323.40x = 139,985.10 × 63,385.80
  4. Step 4: Simplify right side
    93,323.40x = 8,873,067,551.58
  5. Step 5: Solve for x
    x = 8,873,067,551.58/93,323.40
  6. Step 6: Final answer
    x = 95,078.70

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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.