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Finding the Fourth Proportional to 293,048.80, 439,573.20 and 143,312.20

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Solution

The fourth proportional to 293,048.80, 439,573.20 and 143,312.20 is: 214,968.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,048.80 : 439,573.20 = 143,312.20 : x
  2. Step 2: Convert to fraction form
    293,048.80/439,573.20 = 143,312.20/x
  3. Step 3: Cross multiply
    293,048.80x = 439,573.20 × 143,312.20
  4. Step 4: Simplify right side
    293,048.80x = 62,996,202,353.04
  5. Step 5: Solve for x
    x = 62,996,202,353.04/293,048.80
  6. Step 6: Final answer
    x = 214,968.30

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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.