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Finding the Fourth Proportional to 518,186.30, 715,098.53 and 300,437.19

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Solution

The fourth proportional to 518,186.30, 715,098.53 and 300,437.19 is: 414,604.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,186.30 : 715,098.53 = 300,437.19 : x
  2. Step 2: Convert to fraction form
    518,186.30/715,098.53 = 300,437.19/x
  3. Step 3: Cross multiply
    518,186.30x = 715,098.53 × 300,437.19
  4. Step 4: Simplify right side
    518,186.30x = 214,842,193,677.42
  5. Step 5: Solve for x
    x = 214,842,193,677.42/518,186.30
  6. Step 6: Final answer
    x = 414,604.16

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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.