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Finding the Fourth Proportional to 93,291.18, 139,978.02 and 48,907.32

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Solution

The fourth proportional to 93,291.18, 139,978.02 and 48,907.32 is: 73,382.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,291.18 : 139,978.02 = 48,907.32 : x
  2. Step 2: Convert to fraction form
    93,291.18/139,978.02 = 48,907.32/x
  3. Step 3: Cross multiply
    93,291.18x = 139,978.02 × 48,907.32
  4. Step 4: Simplify right side
    93,291.18x = 6,845,949,817.11
  5. Step 5: Solve for x
    x = 6,845,949,817.11/93,291.18
  6. Step 6: Final answer
    x = 73,382.61

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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.