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Finding the Fourth Proportional to 93,293.68, 128,741.46 and 50,851.28

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Solution

The fourth proportional to 93,293.68, 128,741.46 and 50,851.28 is: 70,172.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,293.68 : 128,741.46 = 50,851.28 : x
  2. Step 2: Convert to fraction form
    93,293.68/128,741.46 = 50,851.28/x
  3. Step 3: Cross multiply
    93,293.68x = 128,741.46 × 50,851.28
  4. Step 4: Simplify right side
    93,293.68x = 6,546,668,030.07
  5. Step 5: Solve for x
    x = 6,546,668,030.07/93,293.68
  6. Step 6: Final answer
    x = 70,172.69

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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.