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Finding the Fourth Proportional to 358,852.64, 538,261.07 and 134,196.55

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Solution

The fourth proportional to 358,852.64, 538,261.07 and 134,196.55 is: 201,288.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,852.64 : 538,261.07 = 134,196.55 : x
  2. Step 2: Convert to fraction form
    358,852.64/538,261.07 = 134,196.55/x
  3. Step 3: Cross multiply
    358,852.64x = 538,261.07 × 134,196.55
  4. Step 4: Simplify right side
    358,852.64x = 72,232,780,528.84
  5. Step 5: Solve for x
    x = 72,232,780,528.84/358,852.64
  6. Step 6: Final answer
    x = 201,288.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.