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Finding the Fourth Proportional to 23,710.50, 32,720.72 and 12,955.08

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Solution

The fourth proportional to 23,710.50, 32,720.72 and 12,955.08 is: 17,878.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,710.50 : 32,720.72 = 12,955.08 : x
  2. Step 2: Convert to fraction form
    23,710.50/32,720.72 = 12,955.08/x
  3. Step 3: Cross multiply
    23,710.50x = 32,720.72 × 12,955.08
  4. Step 4: Simplify right side
    23,710.50x = 423,899,545.26
  5. Step 5: Solve for x
    x = 423,899,545.26/23,710.50
  6. Step 6: Final answer
    x = 17,878.14

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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.