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Finding the Fourth Proportional to 65,897.54, 90,939.35 and 35,683.55

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Solution

The fourth proportional to 65,897.54, 90,939.35 and 35,683.55 is: 49,243.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,897.54 : 90,939.35 = 35,683.55 : x
  2. Step 2: Convert to fraction form
    65,897.54/90,939.35 = 35,683.55/x
  3. Step 3: Cross multiply
    65,897.54x = 90,939.35 × 35,683.55
  4. Step 4: Simplify right side
    65,897.54x = 3,245,038,477.20
  5. Step 5: Solve for x
    x = 3,245,038,477.20/65,897.54
  6. Step 6: Final answer
    x = 49,243.70

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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.