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Finding the Fourth Proportional to 127,623, 191,455.26 and 43,390.72

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Solution

The fourth proportional to 127,623, 191,455.26 and 43,390.72 is: 65,093.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,623 : 191,455.26 = 43,390.72 : x
  2. Step 2: Convert to fraction form
    127,623/191,455.26 = 43,390.72/x
  3. Step 3: Cross multiply
    127,623x = 191,455.26 × 43,390.72
  4. Step 4: Simplify right side
    127,623x = 8,307,381,579.19
  5. Step 5: Solve for x
    x = 8,307,381,579.19/127,623
  6. Step 6: Final answer
    x = 65,093.14

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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.