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Finding the Fourth Proportional to 70,418.88, 97,187.28 and 45,341.28

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Solution

The fourth proportional to 70,418.88, 97,187.28 and 45,341.28 is: 62,576.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,418.88 : 97,187.28 = 45,341.28 : x
  2. Step 2: Convert to fraction form
    70,418.88/97,187.28 = 45,341.28/x
  3. Step 3: Cross multiply
    70,418.88x = 97,187.28 × 45,341.28
  4. Step 4: Simplify right side
    70,418.88x = 4,406,595,674.92
  5. Step 5: Solve for x
    x = 4,406,595,674.92/70,418.88
  6. Step 6: Final answer
    x = 62,576.91

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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.