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Finding the Fourth Proportional to 356,907.31, 535,501.14 and 157,087.60

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Solution

The fourth proportional to 356,907.31, 535,501.14 and 157,087.60 is: 235,693.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,907.31 : 535,501.14 = 157,087.60 : x
  2. Step 2: Convert to fraction form
    356,907.31/535,501.14 = 157,087.60/x
  3. Step 3: Cross multiply
    356,907.31x = 535,501.14 × 157,087.60
  4. Step 4: Simplify right side
    356,907.31x = 84,120,590,847.84
  5. Step 5: Solve for x
    x = 84,120,590,847.84/356,907.31
  6. Step 6: Final answer
    x = 235,693.10

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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.