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Finding the Fourth Proportional to 543,189.60, 814,784.40 and 188,215.20

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Solution

The fourth proportional to 543,189.60, 814,784.40 and 188,215.20 is: 282,322.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,189.60 : 814,784.40 = 188,215.20 : x
  2. Step 2: Convert to fraction form
    543,189.60/814,784.40 = 188,215.20/x
  3. Step 3: Cross multiply
    543,189.60x = 814,784.40 × 188,215.20
  4. Step 4: Simplify right side
    543,189.60x = 153,354,808,802.88
  5. Step 5: Solve for x
    x = 153,354,808,802.88/543,189.60
  6. Step 6: Final answer
    x = 282,322.80

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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.