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Finding the Fourth Proportional to 111,456.81, 153,806.93 and 63,055.08

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Solution

The fourth proportional to 111,456.81, 153,806.93 and 63,055.08 is: 87,014.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,456.81 : 153,806.93 = 63,055.08 : x
  2. Step 2: Convert to fraction form
    111,456.81/153,806.93 = 63,055.08/x
  3. Step 3: Cross multiply
    111,456.81x = 153,806.93 × 63,055.08
  4. Step 4: Simplify right side
    111,456.81x = 9,698,308,452.13
  5. Step 5: Solve for x
    x = 9,698,308,452.13/111,456.81
  6. Step 6: Final answer
    x = 87,014.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.