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Finding the Fourth Proportional to 511,277.53, 705,557.26 and 278,699.38

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Solution

The fourth proportional to 511,277.53, 705,557.26 and 278,699.38 is: 384,602.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,277.53 : 705,557.26 = 278,699.38 : x
  2. Step 2: Convert to fraction form
    511,277.53/705,557.26 = 278,699.38/x
  3. Step 3: Cross multiply
    511,277.53x = 705,557.26 × 278,699.38
  4. Step 4: Simplify right side
    511,277.53x = 196,638,370,916.50
  5. Step 5: Solve for x
    x = 196,638,370,916.50/511,277.53
  6. Step 6: Final answer
    x = 384,602.02

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1.5x scale

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.