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Finding the Fourth Proportional to 70,741.78, 97,646.28 and 45,316.54

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Solution

The fourth proportional to 70,741.78, 97,646.28 and 45,316.54 is: 62,551.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,741.78 : 97,646.28 = 45,316.54 : x
  2. Step 2: Convert to fraction form
    70,741.78/97,646.28 = 45,316.54/x
  3. Step 3: Cross multiply
    70,741.78x = 97,646.28 × 45,316.54
  4. Step 4: Simplify right side
    70,741.78x = 4,424,991,553.47
  5. Step 5: Solve for x
    x = 4,424,991,553.47/70,741.78
  6. Step 6: Final answer
    x = 62,551.32

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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.