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Finding the Fourth Proportional to 93,312.30, 139,968.45 and 88,257.90

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Solution

The fourth proportional to 93,312.30, 139,968.45 and 88,257.90 is: 132,386.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312.30 : 139,968.45 = 88,257.90 : x
  2. Step 2: Convert to fraction form
    93,312.30/139,968.45 = 88,257.90/x
  3. Step 3: Cross multiply
    93,312.30x = 139,968.45 × 88,257.90
  4. Step 4: Simplify right side
    93,312.30x = 12,353,321,463.26
  5. Step 5: Solve for x
    x = 12,353,321,463.26/93,312.30
  6. Step 6: Final answer
    x = 132,386.85

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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.