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Finding the Fourth Proportional to 1,113.76, 1,656.62 and 1,110.00

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Solution

The fourth proportional to 1,113.76, 1,656.62 and 1,110.00 is: 1,651.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113.76 : 1,656.62 = 1,110.00 : x
  2. Step 2: Convert to fraction form
    1,113.76/1,656.62 = 1,110.00/x
  3. Step 3: Cross multiply
    1,113.76x = 1,656.62 × 1,110.00
  4. Step 4: Simplify right side
    1,113.76x = 1,838,853.02
  5. Step 5: Solve for x
    x = 1,838,853.02/1,113.76
  6. Step 6: Final answer
    x = 1,651.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.