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Finding the Fourth Proportional to 8,607.51, 11,878.47 and 4,831.49

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Solution

The fourth proportional to 8,607.51, 11,878.47 and 4,831.49 is: 6,667.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.51 : 11,878.47 = 4,831.49 : x
  2. Step 2: Convert to fraction form
    8,607.51/11,878.47 = 4,831.49/x
  3. Step 3: Cross multiply
    8,607.51x = 11,878.47 × 4,831.49
  4. Step 4: Simplify right side
    8,607.51x = 57,390,709.02
  5. Step 5: Solve for x
    x = 57,390,709.02/8,607.51
  6. Step 6: Final answer
    x = 6,667.52

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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.