Home / 83,698.06-125,547.30-20,518.47

Finding the Fourth Proportional to 83,698.06, 125,547.30 and 20,518.47

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Solution

The fourth proportional to 83,698.06, 125,547.30 and 20,518.47 is: 30,777.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,698.06 : 125,547.30 = 20,518.47 : x
  2. Step 2: Convert to fraction form
    83,698.06/125,547.30 = 20,518.47/x
  3. Step 3: Cross multiply
    83,698.06x = 125,547.30 × 20,518.47
  4. Step 4: Simplify right side
    83,698.06x = 2,576,038,508.63
  5. Step 5: Solve for x
    x = 2,576,038,508.63/83,698.06
  6. Step 6: Final answer
    x = 30,777.76

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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.