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Finding the Fourth Proportional to 618,683.40, 928,024.38 and 169,407.72

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Solution

The fourth proportional to 618,683.40, 928,024.38 and 169,407.72 is: 254,111.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,683.40 : 928,024.38 = 169,407.72 : x
  2. Step 2: Convert to fraction form
    618,683.40/928,024.38 = 169,407.72/x
  3. Step 3: Cross multiply
    618,683.40x = 928,024.38 × 169,407.72
  4. Step 4: Simplify right side
    618,683.40x = 157,214,494,320.21
  5. Step 5: Solve for x
    x = 157,214,494,320.21/618,683.40
  6. Step 6: Final answer
    x = 254,111.38

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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.