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Finding the Fourth Proportional to 248,332.40, 372,505.44 and 90,678.32

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Solution

The fourth proportional to 248,332.40, 372,505.44 and 90,678.32 is: 136,019.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,332.40 : 372,505.44 = 90,678.32 : x
  2. Step 2: Convert to fraction form
    248,332.40/372,505.44 = 90,678.32/x
  3. Step 3: Cross multiply
    248,332.40x = 372,505.44 × 90,678.32
  4. Step 4: Simplify right side
    248,332.40x = 33,778,167,490.06
  5. Step 5: Solve for x
    x = 33,778,167,490.06/248,332.40
  6. Step 6: Final answer
    x = 136,019.98

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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.