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Finding the Fourth Proportional to 25,859.81, 35,686.58 and 14,681.81

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Solution

The fourth proportional to 25,859.81, 35,686.58 and 14,681.81 is: 20,260.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,859.81 : 35,686.58 = 14,681.81 : x
  2. Step 2: Convert to fraction form
    25,859.81/35,686.58 = 14,681.81/x
  3. Step 3: Cross multiply
    25,859.81x = 35,686.58 × 14,681.81
  4. Step 4: Simplify right side
    25,859.81x = 523,943,602.92
  5. Step 5: Solve for x
    x = 523,943,602.92/25,859.81
  6. Step 6: Final answer
    x = 20,260.92

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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.