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Finding the Fourth Proportional to 157,907.56, 217,905.90 and 93,418.60

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Solution

The fourth proportional to 157,907.56, 217,905.90 and 93,418.60 is: 128,913.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,907.56 : 217,905.90 = 93,418.60 : x
  2. Step 2: Convert to fraction form
    157,907.56/217,905.90 = 93,418.60/x
  3. Step 3: Cross multiply
    157,907.56x = 217,905.90 × 93,418.60
  4. Step 4: Simplify right side
    157,907.56x = 20,356,464,109.74
  5. Step 5: Solve for x
    x = 20,356,464,109.74/157,907.56
  6. Step 6: Final answer
    x = 128,913.80

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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.