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Finding the Fourth Proportional to 93,172.30, 139,715.43 and 29,980.66

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Solution

The fourth proportional to 93,172.30, 139,715.43 and 29,980.66 is: 44,957.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,172.30 : 139,715.43 = 29,980.66 : x
  2. Step 2: Convert to fraction form
    93,172.30/139,715.43 = 29,980.66/x
  3. Step 3: Cross multiply
    93,172.30x = 139,715.43 × 29,980.66
  4. Step 4: Simplify right side
    93,172.30x = 4,188,760,803.58
  5. Step 5: Solve for x
    x = 4,188,760,803.58/93,172.30
  6. Step 6: Final answer
    x = 44,957.15

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1.5x scale

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.