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Finding the Fourth Proportional to 518,455.78, 777,683.77 and 163,497.58

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Solution

The fourth proportional to 518,455.78, 777,683.77 and 163,497.58 is: 245,246.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,455.78 : 777,683.77 = 163,497.58 : x
  2. Step 2: Convert to fraction form
    518,455.78/777,683.77 = 163,497.58/x
  3. Step 3: Cross multiply
    518,455.78x = 777,683.77 × 163,497.58
  4. Step 4: Simplify right side
    518,455.78x = 127,149,412,047.32
  5. Step 5: Solve for x
    x = 127,149,412,047.32/518,455.78
  6. Step 6: Final answer
    x = 245,246.40

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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.