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Finding the Fourth Proportional to 345,957.74, 477,421.47 and 186,981.74

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Solution

The fourth proportional to 345,957.74, 477,421.47 and 186,981.74 is: 258,034.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,957.74 : 477,421.47 = 186,981.74 : x
  2. Step 2: Convert to fraction form
    345,957.74/477,421.47 = 186,981.74/x
  3. Step 3: Cross multiply
    345,957.74x = 477,421.47 × 186,981.74
  4. Step 4: Simplify right side
    345,957.74x = 89,269,097,173.96
  5. Step 5: Solve for x
    x = 89,269,097,173.96/345,957.74
  6. Step 6: Final answer
    x = 258,034.69

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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.