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Finding the Fourth Proportional to 199,816.40, 299,681.40 and 87,496.40

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Solution

The fourth proportional to 199,816.40, 299,681.40 and 87,496.40 is: 131,225.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,816.40 : 299,681.40 = 87,496.40 : x
  2. Step 2: Convert to fraction form
    199,816.40/299,681.40 = 87,496.40/x
  3. Step 3: Cross multiply
    199,816.40x = 299,681.40 × 87,496.40
  4. Step 4: Simplify right side
    199,816.40x = 26,221,043,646.96
  5. Step 5: Solve for x
    x = 26,221,043,646.96/199,816.40
  6. Step 6: Final answer
    x = 131,225.68

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1.5x scale

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.