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Finding the Fourth Proportional to 70,746.39, 97,643.89 and 40,551.93

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Solution

The fourth proportional to 70,746.39, 97,643.89 and 40,551.93 is: 55,969.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,746.39 : 97,643.89 = 40,551.93 : x
  2. Step 2: Convert to fraction form
    70,746.39/97,643.89 = 40,551.93/x
  3. Step 3: Cross multiply
    70,746.39x = 97,643.89 × 40,551.93
  4. Step 4: Simplify right side
    70,746.39x = 3,959,648,192.21
  5. Step 5: Solve for x
    x = 3,959,648,192.21/70,746.39
  6. Step 6: Final answer
    x = 55,969.61

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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.