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Finding the Fourth Proportional to 93,457.76, 128,971.56 and 51,016.28

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Solution

The fourth proportional to 93,457.76, 128,971.56 and 51,016.28 is: 70,402.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,457.76 : 128,971.56 = 51,016.28 : x
  2. Step 2: Convert to fraction form
    93,457.76/128,971.56 = 51,016.28/x
  3. Step 3: Cross multiply
    93,457.76x = 128,971.56 × 51,016.28
  4. Step 4: Simplify right side
    93,457.76x = 6,579,649,217.00
  5. Step 5: Solve for x
    x = 6,579,649,217.00/93,457.76
  6. Step 6: Final answer
    x = 70,402.39

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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.