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Finding the Fourth Proportional to 64,607.40, 96,716.70 and 56,831.40

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Solution

The fourth proportional to 64,607.40, 96,716.70 and 56,831.40 is: 85,076.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,607.40 : 96,716.70 = 56,831.40 : x
  2. Step 2: Convert to fraction form
    64,607.40/96,716.70 = 56,831.40/x
  3. Step 3: Cross multiply
    64,607.40x = 96,716.70 × 56,831.40
  4. Step 4: Simplify right side
    64,607.40x = 5,496,545,464.38
  5. Step 5: Solve for x
    x = 5,496,545,464.38/64,607.40
  6. Step 6: Final answer
    x = 85,076.10

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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.