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Finding the Fourth Proportional to 31,210.70, 43,070.90 and 17,063.54

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Solution

The fourth proportional to 31,210.70, 43,070.90 and 17,063.54 is: 23,547.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,210.70 : 43,070.90 = 17,063.54 : x
  2. Step 2: Convert to fraction form
    31,210.70/43,070.90 = 17,063.54/x
  3. Step 3: Cross multiply
    31,210.70x = 43,070.90 × 17,063.54
  4. Step 4: Simplify right side
    31,210.70x = 734,941,724.31
  5. Step 5: Solve for x
    x = 734,941,724.31/31,210.70
  6. Step 6: Final answer
    x = 23,547.75

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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.