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Finding the Fourth Proportional to 65,779.76, 90,896.28 and 46,884.08

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Solution

The fourth proportional to 65,779.76, 90,896.28 and 46,884.08 is: 64,785.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,779.76 : 90,896.28 = 46,884.08 : x
  2. Step 2: Convert to fraction form
    65,779.76/90,896.28 = 46,884.08/x
  3. Step 3: Cross multiply
    65,779.76x = 90,896.28 × 46,884.08
  4. Step 4: Simplify right side
    65,779.76x = 4,261,588,463.22
  5. Step 5: Solve for x
    x = 4,261,588,463.22/65,779.76
  6. Step 6: Final answer
    x = 64,785.71

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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.