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Finding the Fourth Proportional to 280,611.33, 387,252.15 and 153,295.13

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Solution

The fourth proportional to 280,611.33, 387,252.15 and 153,295.13 is: 211,551.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,611.33 : 387,252.15 = 153,295.13 : x
  2. Step 2: Convert to fraction form
    280,611.33/387,252.15 = 153,295.13/x
  3. Step 3: Cross multiply
    280,611.33x = 387,252.15 × 153,295.13
  4. Step 4: Simplify right side
    280,611.33x = 59,363,866,740.77
  5. Step 5: Solve for x
    x = 59,363,866,740.77/280,611.33
  6. Step 6: Final answer
    x = 211,551.92

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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.