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Finding the Fourth Proportional to 65,853.61, 98,802.59 and 20,882.31

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Solution

The fourth proportional to 65,853.61, 98,802.59 and 20,882.31 is: 31,330.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,853.61 : 98,802.59 = 20,882.31 : x
  2. Step 2: Convert to fraction form
    65,853.61/98,802.59 = 20,882.31/x
  3. Step 3: Cross multiply
    65,853.61x = 98,802.59 × 20,882.31
  4. Step 4: Simplify right side
    65,853.61x = 2,063,225,838.26
  5. Step 5: Solve for x
    x = 2,063,225,838.26/65,853.61
  6. Step 6: Final answer
    x = 31,330.49

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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.