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Finding the Fourth Proportional to 93,457.92, 128,644.56 and 81,500.16

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Solution

The fourth proportional to 93,457.92, 128,644.56 and 81,500.16 is: 112,184.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,457.92 : 128,644.56 = 81,500.16 : x
  2. Step 2: Convert to fraction form
    93,457.92/128,644.56 = 81,500.16/x
  3. Step 3: Cross multiply
    93,457.92x = 128,644.56 × 81,500.16
  4. Step 4: Simplify right side
    93,457.92x = 10,484,552,223.13
  5. Step 5: Solve for x
    x = 10,484,552,223.13/93,457.92
  6. Step 6: Final answer
    x = 112,184.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.