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Finding the Fourth Proportional to 406,392.18, 609,411.60 and 216,810.27

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Solution

The fourth proportional to 406,392.18, 609,411.60 and 216,810.27 is: 325,121.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,392.18 : 609,411.60 = 216,810.27 : x
  2. Step 2: Convert to fraction form
    406,392.18/609,411.60 = 216,810.27/x
  3. Step 3: Cross multiply
    406,392.18x = 609,411.60 × 216,810.27
  4. Step 4: Simplify right side
    406,392.18x = 132,126,693,537.13
  5. Step 5: Solve for x
    x = 132,126,693,537.13/406,392.18
  6. Step 6: Final answer
    x = 325,121.15

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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.