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Finding the Fourth Proportional to 346,149, 477,685.62 and 187,173

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Solution

The fourth proportional to 346,149, 477,685.62 and 187,173 is: 258,298.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,149 : 477,685.62 = 187,173 : x
  2. Step 2: Convert to fraction form
    346,149/477,685.62 = 187,173/x
  3. Step 3: Cross multiply
    346,149x = 477,685.62 × 187,173
  4. Step 4: Simplify right side
    346,149x = 89,409,850,552.26
  5. Step 5: Solve for x
    x = 89,409,850,552.26/346,149
  6. Step 6: Final answer
    x = 258,298.74

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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.