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Finding the Fourth Proportional to 285,210.99, 393,857.88 and 183,413.24

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Solution

The fourth proportional to 285,210.99, 393,857.88 and 183,413.24 is: 253,281.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,210.99 : 393,857.88 = 183,413.24 : x
  2. Step 2: Convert to fraction form
    285,210.99/393,857.88 = 183,413.24/x
  3. Step 3: Cross multiply
    285,210.99x = 393,857.88 × 183,413.24
  4. Step 4: Simplify right side
    285,210.99x = 72,238,747,901.04
  5. Step 5: Solve for x
    x = 72,238,747,901.04/285,210.99
  6. Step 6: Final answer
    x = 253,281.78

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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.