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Finding the Fourth Proportional to 74,243.76, 111,312.72 and 34,779.34

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Solution

The fourth proportional to 74,243.76, 111,312.72 and 34,779.34 is: 52,144.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,243.76 : 111,312.72 = 34,779.34 : x
  2. Step 2: Convert to fraction form
    74,243.76/111,312.72 = 34,779.34/x
  3. Step 3: Cross multiply
    74,243.76x = 111,312.72 × 34,779.34
  4. Step 4: Simplify right side
    74,243.76x = 3,871,382,935.20
  5. Step 5: Solve for x
    x = 3,871,382,935.20/74,243.76
  6. Step 6: Final answer
    x = 52,144.22

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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.