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Finding the Fourth Proportional to 282,388.32, 389,699.19 and 153,328.32

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Solution

The fourth proportional to 282,388.32, 389,699.19 and 153,328.32 is: 211,594.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,388.32 : 389,699.19 = 153,328.32 : x
  2. Step 2: Convert to fraction form
    282,388.32/389,699.19 = 153,328.32/x
  3. Step 3: Cross multiply
    282,388.32x = 389,699.19 × 153,328.32
  4. Step 4: Simplify right side
    282,388.32x = 59,751,922,108.06
  5. Step 5: Solve for x
    x = 59,751,922,108.06/282,388.32
  6. Step 6: Final answer
    x = 211,594.88

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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.