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Finding the Fourth Proportional to 911,640.16, 1,367,461.20 and 237,720.88

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Solution

The fourth proportional to 911,640.16, 1,367,461.20 and 237,720.88 is: 356,581.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,640.16 : 1,367,461.20 = 237,720.88 : x
  2. Step 2: Convert to fraction form
    911,640.16/1,367,461.20 = 237,720.88/x
  3. Step 3: Cross multiply
    911,640.16x = 1,367,461.20 × 237,720.88
  4. Step 4: Simplify right side
    911,640.16x = 325,074,079,829.86
  5. Step 5: Solve for x
    x = 325,074,079,829.86/911,640.16
  6. Step 6: Final answer
    x = 356,581.57

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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.