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Finding the Fourth Proportional to 430,826.80, 646,240.20 and 194,630.80

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Solution

The fourth proportional to 430,826.80, 646,240.20 and 194,630.80 is: 291,946.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,826.80 : 646,240.20 = 194,630.80 : x
  2. Step 2: Convert to fraction form
    430,826.80/646,240.20 = 194,630.80/x
  3. Step 3: Cross multiply
    430,826.80x = 646,240.20 × 194,630.80
  4. Step 4: Simplify right side
    430,826.80x = 125,778,247,118.16
  5. Step 5: Solve for x
    x = 125,778,247,118.16/430,826.80
  6. Step 6: Final answer
    x = 291,946.20

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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.