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Finding the Fourth Proportional to 211,225.95, 316,735.25 and 104,486.58

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Solution

The fourth proportional to 211,225.95, 316,735.25 and 104,486.58 is: 156,678.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,225.95 : 316,735.25 = 104,486.58 : x
  2. Step 2: Convert to fraction form
    211,225.95/316,735.25 = 104,486.58/x
  3. Step 3: Cross multiply
    211,225.95x = 316,735.25 × 104,486.58
  4. Step 4: Simplify right side
    211,225.95x = 33,094,582,515.51
  5. Step 5: Solve for x
    x = 33,094,582,515.51/211,225.95
  6. Step 6: Final answer
    x = 156,678.58

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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.