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Finding the Fourth Proportional to 70,792.56, 97,688.70 and 42,110.64

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Solution

The fourth proportional to 70,792.56, 97,688.70 and 42,110.64 is: 58,109.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,792.56 : 97,688.70 = 42,110.64 : x
  2. Step 2: Convert to fraction form
    70,792.56/97,688.70 = 42,110.64/x
  3. Step 3: Cross multiply
    70,792.56x = 97,688.70 × 42,110.64
  4. Step 4: Simplify right side
    70,792.56x = 4,113,733,677.77
  5. Step 5: Solve for x
    x = 4,113,733,677.77/70,792.56
  6. Step 6: Final answer
    x = 58,109.69

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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.