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Finding the Fourth Proportional to 405,016.40, 606,212.40 and 357,777.20

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Solution

The fourth proportional to 405,016.40, 606,212.40 and 357,777.20 is: 535,506.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,016.40 : 606,212.40 = 357,777.20 : x
  2. Step 2: Convert to fraction form
    405,016.40/606,212.40 = 357,777.20/x
  3. Step 3: Cross multiply
    405,016.40x = 606,212.40 × 357,777.20
  4. Step 4: Simplify right side
    405,016.40x = 216,888,975,077.28
  5. Step 5: Solve for x
    x = 216,888,975,077.28/405,016.40
  6. Step 6: Final answer
    x = 535,506.65

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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.