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Finding the Fourth Proportional to 65,886.48, 90,923.40 and 35,671.82

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Solution

The fourth proportional to 65,886.48, 90,923.40 and 35,671.82 is: 49,227.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,886.48 : 90,923.40 = 35,671.82 : x
  2. Step 2: Convert to fraction form
    65,886.48/90,923.40 = 35,671.82/x
  3. Step 3: Cross multiply
    65,886.48x = 90,923.40 × 35,671.82
  4. Step 4: Simplify right side
    65,886.48x = 3,243,402,980.23
  5. Step 5: Solve for x
    x = 3,243,402,980.23/65,886.48
  6. Step 6: Final answer
    x = 49,227.14

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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.