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Finding the Fourth Proportional to 70,756.61, 97,636.19 and 40,533.68

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Solution

The fourth proportional to 70,756.61, 97,636.19 and 40,533.68 is: 55,931.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,756.61 : 97,636.19 = 40,533.68 : x
  2. Step 2: Convert to fraction form
    70,756.61/97,636.19 = 40,533.68/x
  3. Step 3: Cross multiply
    70,756.61x = 97,636.19 × 40,533.68
  4. Step 4: Simplify right side
    70,756.61x = 3,957,554,123.30
  5. Step 5: Solve for x
    x = 3,957,554,123.30/70,756.61
  6. Step 6: Final answer
    x = 55,931.94

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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.