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Finding the Fourth Proportional to 65,696.19, 90,661.40 and 37,403.70

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Solution

The fourth proportional to 65,696.19, 90,661.40 and 37,403.70 is: 51,617.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,696.19 : 90,661.40 = 37,403.70 : x
  2. Step 2: Convert to fraction form
    65,696.19/90,661.40 = 37,403.70/x
  3. Step 3: Cross multiply
    65,696.19x = 90,661.40 × 37,403.70
  4. Step 4: Simplify right side
    65,696.19x = 3,391,071,807.18
  5. Step 5: Solve for x
    x = 3,391,071,807.18/65,696.19
  6. Step 6: Final answer
    x = 51,617.48

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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.