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Finding the Fourth Proportional to 623,258.81, 860,165.51 and 361,671.74

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Solution

The fourth proportional to 623,258.81, 860,165.51 and 361,671.74 is: 499,146.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,258.81 : 860,165.51 = 361,671.74 : x
  2. Step 2: Convert to fraction form
    623,258.81/860,165.51 = 361,671.74/x
  3. Step 3: Cross multiply
    623,258.81x = 860,165.51 × 361,671.74
  4. Step 4: Simplify right side
    623,258.81x = 311,097,557,031.74
  5. Step 5: Solve for x
    x = 311,097,557,031.74/623,258.81
  6. Step 6: Final answer
    x = 499,146.66

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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.