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Finding the Fourth Proportional to 65,555.69, 90,389.47 and 44,869.16

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Solution

The fourth proportional to 65,555.69, 90,389.47 and 44,869.16 is: 61,866.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,555.69 : 90,389.47 = 44,869.16 : x
  2. Step 2: Convert to fraction form
    65,555.69/90,389.47 = 44,869.16/x
  3. Step 3: Cross multiply
    65,555.69x = 90,389.47 × 44,869.16
  4. Step 4: Simplify right side
    65,555.69x = 4,055,699,705.55
  5. Step 5: Solve for x
    x = 4,055,699,705.55/65,555.69
  6. Step 6: Final answer
    x = 61,866.48

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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.