Home / 185,648.46-278,428.05-85,712.64

Finding the Fourth Proportional to 185,648.46, 278,428.05 and 85,712.64

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Solution

The fourth proportional to 185,648.46, 278,428.05 and 85,712.64 is: 128,548.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,648.46 : 278,428.05 = 85,712.64 : x
  2. Step 2: Convert to fraction form
    185,648.46/278,428.05 = 85,712.64/x
  3. Step 3: Cross multiply
    185,648.46x = 278,428.05 × 85,712.64
  4. Step 4: Simplify right side
    185,648.46x = 23,864,803,215.55
  5. Step 5: Solve for x
    x = 23,864,803,215.55/185,648.46
  6. Step 6: Final answer
    x = 128,548.35

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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.