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Finding the Fourth Proportional to 211,330.90, 316,413.15 and 164,674.90

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Solution

The fourth proportional to 211,330.90, 316,413.15 and 164,674.90 is: 246,557.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,330.90 : 316,413.15 = 164,674.90 : x
  2. Step 2: Convert to fraction form
    211,330.90/316,413.15 = 164,674.90/x
  3. Step 3: Cross multiply
    211,330.90x = 316,413.15 × 164,674.90
  4. Step 4: Simplify right side
    211,330.90x = 52,105,303,834.94
  5. Step 5: Solve for x
    x = 52,105,303,834.94/211,330.90
  6. Step 6: Final answer
    x = 246,557.90

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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.