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Finding the Fourth Proportional to 256,656.50, 354,098.23 and 154,643.58

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Solution

The fourth proportional to 256,656.50, 354,098.23 and 154,643.58 is: 213,355.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,656.50 : 354,098.23 = 154,643.58 : x
  2. Step 2: Convert to fraction form
    256,656.50/354,098.23 = 154,643.58/x
  3. Step 3: Cross multiply
    256,656.50x = 354,098.23 × 154,643.58
  4. Step 4: Simplify right side
    256,656.50x = 54,759,018,442.12
  5. Step 5: Solve for x
    x = 54,759,018,442.12/256,656.50
  6. Step 6: Final answer
    x = 213,355.28

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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.