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Finding the Fourth Proportional to 1,666.65, 2,300.46 and 1,003.38

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Solution

The fourth proportional to 1,666.65, 2,300.46 and 1,003.38 is: 1,384.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,666.65 : 2,300.46 = 1,003.38 : x
  2. Step 2: Convert to fraction form
    1,666.65/2,300.46 = 1,003.38/x
  3. Step 3: Cross multiply
    1,666.65x = 2,300.46 × 1,003.38
  4. Step 4: Simplify right side
    1,666.65x = 2,308,235.55
  5. Step 5: Solve for x
    x = 2,308,235.55/1,666.65
  6. Step 6: Final answer
    x = 1,384.96

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1.5x scale

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.