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Finding the Fourth Proportional to 446,403.72, 615,808.62 and 285,089.16

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Solution

The fourth proportional to 446,403.72, 615,808.62 and 285,089.16 is: 393,277.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,403.72 : 615,808.62 = 285,089.16 : x
  2. Step 2: Convert to fraction form
    446,403.72/615,808.62 = 285,089.16/x
  3. Step 3: Cross multiply
    446,403.72x = 615,808.62 × 285,089.16
  4. Step 4: Simplify right side
    446,403.72x = 175,560,362,196.56
  5. Step 5: Solve for x
    x = 175,560,362,196.56/446,403.72
  6. Step 6: Final answer
    x = 393,277.10

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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.