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Finding the Fourth Proportional to 256,603.88, 354,114.66 and 143,424.20

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Solution

The fourth proportional to 256,603.88, 354,114.66 and 143,424.20 is: 197,926.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,603.88 : 354,114.66 = 143,424.20 : x
  2. Step 2: Convert to fraction form
    256,603.88/354,114.66 = 143,424.20/x
  3. Step 3: Cross multiply
    256,603.88x = 354,114.66 × 143,424.20
  4. Step 4: Simplify right side
    256,603.88x = 50,788,611,818.77
  5. Step 5: Solve for x
    x = 50,788,611,818.77/256,603.88
  6. Step 6: Final answer
    x = 197,926.13

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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.