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Finding the Fourth Proportional to 519,336.90, 778,859.55 and 164,459.70

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Solution

The fourth proportional to 519,336.90, 778,859.55 and 164,459.70 is: 246,643.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,336.90 : 778,859.55 = 164,459.70 : x
  2. Step 2: Convert to fraction form
    519,336.90/778,859.55 = 164,459.70/x
  3. Step 3: Cross multiply
    519,336.90x = 778,859.55 × 164,459.70
  4. Step 4: Simplify right side
    519,336.90x = 128,091,007,935.14
  5. Step 5: Solve for x
    x = 128,091,007,935.14/519,336.90
  6. Step 6: Final answer
    x = 246,643.38

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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.