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Finding the Fourth Proportional to 4,697.80, 7,046.70 and 1,235

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Solution

The fourth proportional to 4,697.80, 7,046.70 and 1,235 is: 1,852.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,697.80 : 7,046.70 = 1,235 : x
  2. Step 2: Convert to fraction form
    4,697.80/7,046.70 = 1,235/x
  3. Step 3: Cross multiply
    4,697.80x = 7,046.70 × 1,235
  4. Step 4: Simplify right side
    4,697.80x = 8,702,674.50
  5. Step 5: Solve for x
    x = 8,702,674.50/4,697.80
  6. Step 6: Final answer
    x = 1,852.50

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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.