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Finding the Fourth Proportional to 280,153.54, 386,611.08 and 152,828.22

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Solution

The fourth proportional to 280,153.54, 386,611.08 and 152,828.22 is: 210,902.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,153.54 : 386,611.08 = 152,828.22 : x
  2. Step 2: Convert to fraction form
    280,153.54/386,611.08 = 152,828.22/x
  3. Step 3: Cross multiply
    280,153.54x = 386,611.08 × 152,828.22
  4. Step 4: Simplify right side
    280,153.54x = 59,085,083,188.68
  5. Step 5: Solve for x
    x = 59,085,083,188.68/280,153.54
  6. Step 6: Final answer
    x = 210,902.50

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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.