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Finding the Fourth Proportional to 181,779.40, 250,790.64 and 105,256.72

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Solution

The fourth proportional to 181,779.40, 250,790.64 and 105,256.72 is: 145,216.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,779.40 : 250,790.64 = 105,256.72 : x
  2. Step 2: Convert to fraction form
    181,779.40/250,790.64 = 105,256.72/x
  3. Step 3: Cross multiply
    181,779.40x = 250,790.64 × 105,256.72
  4. Step 4: Simplify right side
    181,779.40x = 26,397,400,173.10
  5. Step 5: Solve for x
    x = 26,397,400,173.10/181,779.40
  6. Step 6: Final answer
    x = 145,216.68

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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.