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Finding the Fourth Proportional to 242,690.40, 364,090.89 and 74,234.51

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Solution

The fourth proportional to 242,690.40, 364,090.89 and 74,234.51 is: 111,368.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,690.40 : 364,090.89 = 74,234.51 : x
  2. Step 2: Convert to fraction form
    242,690.40/364,090.89 = 74,234.51/x
  3. Step 3: Cross multiply
    242,690.40x = 364,090.89 × 74,234.51
  4. Step 4: Simplify right side
    242,690.40x = 27,028,106,994.16
  5. Step 5: Solve for x
    x = 27,028,106,994.16/242,690.40
  6. Step 6: Final answer
    x = 111,368.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.