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Finding the Fourth Proportional to 11,763.55, 17,638.30 and 4,746.79

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Solution

The fourth proportional to 11,763.55, 17,638.30 and 4,746.79 is: 7,117.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,763.55 : 17,638.30 = 4,746.79 : x
  2. Step 2: Convert to fraction form
    11,763.55/17,638.30 = 4,746.79/x
  3. Step 3: Cross multiply
    11,763.55x = 17,638.30 × 4,746.79
  4. Step 4: Simplify right side
    11,763.55x = 83,725,306.06
  5. Step 5: Solve for x
    x = 83,725,306.06/11,763.55
  6. Step 6: Final answer
    x = 7,117.35

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1.5x scale

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.