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Finding the Fourth Proportional to 185,457.40, 255,931.28 and 100,574.44

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Solution

The fourth proportional to 185,457.40, 255,931.28 and 100,574.44 is: 138,792.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,457.40 : 255,931.28 = 100,574.44 : x
  2. Step 2: Convert to fraction form
    185,457.40/255,931.28 = 100,574.44/x
  3. Step 3: Cross multiply
    185,457.40x = 255,931.28 × 100,574.44
  4. Step 4: Simplify right side
    185,457.40x = 25,740,145,164.48
  5. Step 5: Solve for x
    x = 25,740,145,164.48/185,457.40
  6. Step 6: Final answer
    x = 138,792.76

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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.