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Finding the Fourth Proportional to 316,258.95, 474,245.80 and 156,272.51

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Solution

The fourth proportional to 316,258.95, 474,245.80 and 156,272.51 is: 234,338.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,258.95 : 474,245.80 = 156,272.51 : x
  2. Step 2: Convert to fraction form
    316,258.95/474,245.80 = 156,272.51/x
  3. Step 3: Cross multiply
    316,258.95x = 474,245.80 × 156,272.51
  4. Step 4: Simplify right side
    316,258.95x = 74,111,580,539.47
  5. Step 5: Solve for x
    x = 74,111,580,539.47/316,258.95
  6. Step 6: Final answer
    x = 234,338.29

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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.