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Finding the Fourth Proportional to 93,090.72, 128,467.90 and 50,651.98

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Solution

The fourth proportional to 93,090.72, 128,467.90 and 50,651.98 is: 69,901.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,090.72 : 128,467.90 = 50,651.98 : x
  2. Step 2: Convert to fraction form
    93,090.72/128,467.90 = 50,651.98/x
  3. Step 3: Cross multiply
    93,090.72x = 128,467.90 × 50,651.98
  4. Step 4: Simplify right side
    93,090.72x = 6,507,153,501.44
  5. Step 5: Solve for x
    x = 6,507,153,501.44/93,090.72
  6. Step 6: Final answer
    x = 69,901.20

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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.