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Finding the Fourth Proportional to 65,838.81, 98,564.31 and 40,798.38

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Solution

The fourth proportional to 65,838.81, 98,564.31 and 40,798.38 is: 61,077.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,838.81 : 98,564.31 = 40,798.38 : x
  2. Step 2: Convert to fraction form
    65,838.81/98,564.31 = 40,798.38/x
  3. Step 3: Cross multiply
    65,838.81x = 98,564.31 × 40,798.38
  4. Step 4: Simplify right side
    65,838.81x = 4,021,264,173.82
  5. Step 5: Solve for x
    x = 4,021,264,173.82/65,838.81
  6. Step 6: Final answer
    x = 61,077.41

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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.