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Finding the Fourth Proportional to 93,349.21, 128,831.90 and 57,071.94

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Solution

The fourth proportional to 93,349.21, 128,831.90 and 57,071.94 is: 78,765.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,349.21 : 128,831.90 = 57,071.94 : x
  2. Step 2: Convert to fraction form
    93,349.21/128,831.90 = 57,071.94/x
  3. Step 3: Cross multiply
    93,349.21x = 128,831.90 × 57,071.94
  4. Step 4: Simplify right side
    93,349.21x = 7,352,686,181.53
  5. Step 5: Solve for x
    x = 7,352,686,181.53/93,349.21
  6. Step 6: Final answer
    x = 78,765.38

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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.