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Finding the Fourth Proportional to 70,953.45, 97,929.95 and 40,759.48

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Solution

The fourth proportional to 70,953.45, 97,929.95 and 40,759.48 is: 56,256.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,953.45 : 97,929.95 = 40,759.48 : x
  2. Step 2: Convert to fraction form
    70,953.45/97,929.95 = 40,759.48/x
  3. Step 3: Cross multiply
    70,953.45x = 97,929.95 × 40,759.48
  4. Step 4: Simplify right side
    70,953.45x = 3,991,573,838.43
  5. Step 5: Solve for x
    x = 3,991,573,838.43/70,953.45
  6. Step 6: Final answer
    x = 56,256.23

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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.