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Finding the Fourth Proportional to 64,415.22, 88,893.92 and 38,918.04

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Solution

The fourth proportional to 64,415.22, 88,893.92 and 38,918.04 is: 53,707.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,415.22 : 88,893.92 = 38,918.04 : x
  2. Step 2: Convert to fraction form
    64,415.22/88,893.92 = 38,918.04/x
  3. Step 3: Cross multiply
    64,415.22x = 88,893.92 × 38,918.04
  4. Step 4: Simplify right side
    64,415.22x = 3,459,577,134.32
  5. Step 5: Solve for x
    x = 3,459,577,134.32/64,415.22
  6. Step 6: Final answer
    x = 53,707.45

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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.