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Finding the Fourth Proportional to 157,538.40, 236,422.80 and 104,930.40

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Solution

The fourth proportional to 157,538.40, 236,422.80 and 104,930.40 is: 157,472.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,538.40 : 236,422.80 = 104,930.40 : x
  2. Step 2: Convert to fraction form
    157,538.40/236,422.80 = 104,930.40/x
  3. Step 3: Cross multiply
    157,538.40x = 236,422.80 × 104,930.40
  4. Step 4: Simplify right side
    157,538.40x = 24,807,938,973.12
  5. Step 5: Solve for x
    x = 24,807,938,973.12/157,538.40
  6. Step 6: Final answer
    x = 157,472.33

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1.5x scale

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.