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Finding the Fourth Proportional to 621,176.48, 931,785.42 and 171,859.70

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Solution

The fourth proportional to 621,176.48, 931,785.42 and 171,859.70 is: 257,795.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,176.48 : 931,785.42 = 171,859.70 : x
  2. Step 2: Convert to fraction form
    621,176.48/931,785.42 = 171,859.70/x
  3. Step 3: Cross multiply
    621,176.48x = 931,785.42 × 171,859.70
  4. Step 4: Simplify right side
    621,176.48x = 160,136,362,745.57
  5. Step 5: Solve for x
    x = 160,136,362,745.57/621,176.48
  6. Step 6: Final answer
    x = 257,795.28

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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.