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Finding the Fourth Proportional to 153,793.58, 212,340.08 and 99,477.41

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Solution

The fourth proportional to 153,793.58, 212,340.08 and 99,477.41 is: 137,346.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,793.58 : 212,340.08 = 99,477.41 : x
  2. Step 2: Convert to fraction form
    153,793.58/212,340.08 = 99,477.41/x
  3. Step 3: Cross multiply
    153,793.58x = 212,340.08 × 99,477.41
  4. Step 4: Simplify right side
    153,793.58x = 21,123,041,977.14
  5. Step 5: Solve for x
    x = 21,123,041,977.14/153,793.58
  6. Step 6: Final answer
    x = 137,346.71

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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.