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Finding the Fourth Proportional to 93,127.89, 128,516.31 and 50,686.32

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Solution

The fourth proportional to 93,127.89, 128,516.31 and 50,686.32 is: 69,947.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,127.89 : 128,516.31 = 50,686.32 : x
  2. Step 2: Convert to fraction form
    93,127.89/128,516.31 = 50,686.32/x
  3. Step 3: Cross multiply
    93,127.89x = 128,516.31 × 50,686.32
  4. Step 4: Simplify right side
    93,127.89x = 6,514,018,813.88
  5. Step 5: Solve for x
    x = 6,514,018,813.88/93,127.89
  6. Step 6: Final answer
    x = 69,947.02

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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.