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Finding the Fourth Proportional to 93,031.56, 128,442.87 and 61,255.26

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Solution

The fourth proportional to 93,031.56, 128,442.87 and 61,255.26 is: 84,571.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,031.56 : 128,442.87 = 61,255.26 : x
  2. Step 2: Convert to fraction form
    93,031.56/128,442.87 = 61,255.26/x
  3. Step 3: Cross multiply
    93,031.56x = 128,442.87 × 61,255.26
  4. Step 4: Simplify right side
    93,031.56x = 7,867,801,397.00
  5. Step 5: Solve for x
    x = 7,867,801,397.00/93,031.56
  6. Step 6: Final answer
    x = 84,571.32

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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.