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Finding the Fourth Proportional to 405,439.66, 559,595.55 and 235,771.66

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Solution

The fourth proportional to 405,439.66, 559,595.55 and 235,771.66 is: 325,416.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,439.66 : 559,595.55 = 235,771.66 : x
  2. Step 2: Convert to fraction form
    405,439.66/559,595.55 = 235,771.66/x
  3. Step 3: Cross multiply
    405,439.66x = 559,595.55 × 235,771.66
  4. Step 4: Simplify right side
    405,439.66x = 131,936,771,752.11
  5. Step 5: Solve for x
    x = 131,936,771,752.11/405,439.66
  6. Step 6: Final answer
    x = 325,416.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.