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Finding the Fourth Proportional to 418,368.74, 627,427.35 and 118,873.67

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Solution

The fourth proportional to 418,368.74, 627,427.35 and 118,873.67 is: 178,274.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,368.74 : 627,427.35 = 118,873.67 : x
  2. Step 2: Convert to fraction form
    418,368.74/627,427.35 = 118,873.67/x
  3. Step 3: Cross multiply
    418,368.74x = 627,427.35 × 118,873.67
  4. Step 4: Simplify right side
    418,368.74x = 74,584,588,615.74
  5. Step 5: Solve for x
    x = 74,584,588,615.74/418,368.74
  6. Step 6: Final answer
    x = 178,274.77

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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.