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Finding the Fourth Proportional to 65,803.68, 90,802.08 and 38,947.32

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Solution

The fourth proportional to 65,803.68, 90,802.08 and 38,947.32 is: 53,743.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,803.68 : 90,802.08 = 38,947.32 : x
  2. Step 2: Convert to fraction form
    65,803.68/90,802.08 = 38,947.32/x
  3. Step 3: Cross multiply
    65,803.68x = 90,802.08 × 38,947.32
  4. Step 4: Simplify right side
    65,803.68x = 3,536,497,666.43
  5. Step 5: Solve for x
    x = 3,536,497,666.43/65,803.68
  6. Step 6: Final answer
    x = 53,743.16

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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.