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Finding the Fourth Proportional to 253,808.70, 380,603.70 and 127,400.10

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Solution

The fourth proportional to 253,808.70, 380,603.70 and 127,400.10 is: 191,045.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,808.70 : 380,603.70 = 127,400.10 : x
  2. Step 2: Convert to fraction form
    253,808.70/380,603.70 = 127,400.10/x
  3. Step 3: Cross multiply
    253,808.70x = 380,603.70 × 127,400.10
  4. Step 4: Simplify right side
    253,808.70x = 48,488,949,440.37
  5. Step 5: Solve for x
    x = 48,488,949,440.37/253,808.70
  6. Step 6: Final answer
    x = 191,045.26

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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.