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Finding the Fourth Proportional to 201,681.08, 278,309.06 and 111,019.40

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Solution

The fourth proportional to 201,681.08, 278,309.06 and 111,019.40 is: 153,200.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,681.08 : 278,309.06 = 111,019.40 : x
  2. Step 2: Convert to fraction form
    201,681.08/278,309.06 = 111,019.40/x
  3. Step 3: Cross multiply
    201,681.08x = 278,309.06 × 111,019.40
  4. Step 4: Simplify right side
    201,681.08x = 30,897,704,855.76
  5. Step 5: Solve for x
    x = 30,897,704,855.76/201,681.08
  6. Step 6: Final answer
    x = 153,200.81

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1.5x scale

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.