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Finding the Fourth Proportional to 620,034.20, 930,056.29 and 170,779.85

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Solution

The fourth proportional to 620,034.20, 930,056.29 and 170,779.85 is: 256,171.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,034.20 : 930,056.29 = 170,779.85 : x
  2. Step 2: Convert to fraction form
    620,034.20/930,056.29 = 170,779.85/x
  3. Step 3: Cross multiply
    620,034.20x = 930,056.29 × 170,779.85
  4. Step 4: Simplify right side
    620,034.20x = 158,834,868,620.53
  5. Step 5: Solve for x
    x = 158,834,868,620.53/620,034.20
  6. Step 6: Final answer
    x = 256,171.14

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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.