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Finding the Fourth Proportional to 201,903.64, 278,623.19 and 111,267.98

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Solution

The fourth proportional to 201,903.64, 278,623.19 and 111,267.98 is: 153,547.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,903.64 : 278,623.19 = 111,267.98 : x
  2. Step 2: Convert to fraction form
    201,903.64/278,623.19 = 111,267.98/x
  3. Step 3: Cross multiply
    201,903.64x = 278,623.19 × 111,267.98
  4. Step 4: Simplify right side
    201,903.64x = 31,001,839,462.35
  5. Step 5: Solve for x
    x = 31,001,839,462.35/201,903.64
  6. Step 6: Final answer
    x = 153,547.70

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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.