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Finding the Fourth Proportional to 93,090.42, 128,460.96 and 50,648.97

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Solution

The fourth proportional to 93,090.42, 128,460.96 and 50,648.97 is: 69,893.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,090.42 : 128,460.96 = 50,648.97 : x
  2. Step 2: Convert to fraction form
    93,090.42/128,460.96 = 50,648.97/x
  3. Step 3: Cross multiply
    93,090.42x = 128,460.96 × 50,648.97
  4. Step 4: Simplify right side
    93,090.42x = 6,506,415,309.21
  5. Step 5: Solve for x
    x = 6,506,415,309.21/93,090.42
  6. Step 6: Final answer
    x = 69,893.50

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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.