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Finding the Fourth Proportional to 111,779.90, 167,669.85 and 64,999.97

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Solution

The fourth proportional to 111,779.90, 167,669.85 and 64,999.97 is: 97,499.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,779.90 : 167,669.85 = 64,999.97 : x
  2. Step 2: Convert to fraction form
    111,779.90/167,669.85 = 64,999.97/x
  3. Step 3: Cross multiply
    111,779.90x = 167,669.85 × 64,999.97
  4. Step 4: Simplify right side
    111,779.90x = 10,898,534,888.44
  5. Step 5: Solve for x
    x = 10,898,534,888.44/111,779.90
  6. Step 6: Final answer
    x = 97,499.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.