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Finding the Fourth Proportional to 185,779.98, 256,379.31 and 105,205.32

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Solution

The fourth proportional to 185,779.98, 256,379.31 and 105,205.32 is: 145,185.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,779.98 : 256,379.31 = 105,205.32 : x
  2. Step 2: Convert to fraction form
    185,779.98/256,379.31 = 105,205.32/x
  3. Step 3: Cross multiply
    185,779.98x = 256,379.31 × 105,205.32
  4. Step 4: Simplify right side
    185,779.98x = 26,972,467,349.93
  5. Step 5: Solve for x
    x = 26,972,467,349.93/185,779.98
  6. Step 6: Final answer
    x = 145,185.01

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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.