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Finding the Fourth Proportional to 123,969.64, 171,083.20 and 70,254.08

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Solution

The fourth proportional to 123,969.64, 171,083.20 and 70,254.08 is: 96,953.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,969.64 : 171,083.20 = 70,254.08 : x
  2. Step 2: Convert to fraction form
    123,969.64/171,083.20 = 70,254.08/x
  3. Step 3: Cross multiply
    123,969.64x = 171,083.20 × 70,254.08
  4. Step 4: Simplify right side
    123,969.64x = 12,019,292,819.46
  5. Step 5: Solve for x
    x = 12,019,292,819.46/123,969.64
  6. Step 6: Final answer
    x = 96,953.52

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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.