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Finding the Fourth Proportional to 74,458, 102,752.04 and 40,924

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Solution

The fourth proportional to 74,458, 102,752.04 and 40,924 is: 56,475.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,458 : 102,752.04 = 40,924 : x
  2. Step 2: Convert to fraction form
    74,458/102,752.04 = 40,924/x
  3. Step 3: Cross multiply
    74,458x = 102,752.04 × 40,924
  4. Step 4: Simplify right side
    74,458x = 4,205,024,484.96
  5. Step 5: Solve for x
    x = 4,205,024,484.96/74,458
  6. Step 6: Final answer
    x = 56,475.12

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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.