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Finding the Fourth Proportional to 243,068.64, 364,731 and 124,740

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Solution

The fourth proportional to 243,068.64, 364,731 and 124,740 is: 187,175.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,068.64 : 364,731 = 124,740 : x
  2. Step 2: Convert to fraction form
    243,068.64/364,731 = 124,740/x
  3. Step 3: Cross multiply
    243,068.64x = 364,731 × 124,740
  4. Step 4: Simplify right side
    243,068.64x = 45,496,544,940
  5. Step 5: Solve for x
    x = 45,496,544,940/243,068.64
  6. Step 6: Final answer
    x = 187,175.71

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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.