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Finding the Fourth Proportional to 93,745.14, 129,428.68 and 83,656.22

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Solution

The fourth proportional to 93,745.14, 129,428.68 and 83,656.22 is: 115,499.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,745.14 : 129,428.68 = 83,656.22 : x
  2. Step 2: Convert to fraction form
    93,745.14/129,428.68 = 83,656.22/x
  3. Step 3: Cross multiply
    93,745.14x = 129,428.68 × 83,656.22
  4. Step 4: Simplify right side
    93,745.14x = 10,827,514,128.39
  5. Step 5: Solve for x
    x = 10,827,514,128.39/93,745.14
  6. Step 6: Final answer
    x = 115,499.47

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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.