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Finding the Fourth Proportional to 101,112.57, 139,525.88 and 97,715.43

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Solution

The fourth proportional to 101,112.57, 139,525.88 and 97,715.43 is: 134,838.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,112.57 : 139,525.88 = 97,715.43 : x
  2. Step 2: Convert to fraction form
    101,112.57/139,525.88 = 97,715.43/x
  3. Step 3: Cross multiply
    101,112.57x = 139,525.88 × 97,715.43
  4. Step 4: Simplify right side
    101,112.57x = 13,633,830,871.75
  5. Step 5: Solve for x
    x = 13,633,830,871.75/101,112.57
  6. Step 6: Final answer
    x = 134,838.14

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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.