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Finding the Fourth Proportional to 74,597.39, 102,946.55 and 40,608.08

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Solution

The fourth proportional to 74,597.39, 102,946.55 and 40,608.08 is: 56,040.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,597.39 : 102,946.55 = 40,608.08 : x
  2. Step 2: Convert to fraction form
    74,597.39/102,946.55 = 40,608.08/x
  3. Step 3: Cross multiply
    74,597.39x = 102,946.55 × 40,608.08
  4. Step 4: Simplify right side
    74,597.39x = 4,180,461,738.12
  5. Step 5: Solve for x
    x = 4,180,461,738.12/74,597.39
  6. Step 6: Final answer
    x = 56,040.32

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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.