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Finding the Fourth Proportional to 248,603.40, 372,686.40 and 148,803.30

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Solution

The fourth proportional to 248,603.40, 372,686.40 and 148,803.30 is: 223,074.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,603.40 : 372,686.40 = 148,803.30 : x
  2. Step 2: Convert to fraction form
    248,603.40/372,686.40 = 148,803.30/x
  3. Step 3: Cross multiply
    248,603.40x = 372,686.40 × 148,803.30
  4. Step 4: Simplify right side
    248,603.40x = 55,456,966,185.12
  5. Step 5: Solve for x
    x = 55,456,966,185.12/248,603.40
  6. Step 6: Final answer
    x = 223,074.05

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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.