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Finding the Fourth Proportional to 105,611.51, 157,475.21 and 93,875.51

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Solution

The fourth proportional to 105,611.51, 157,475.21 and 93,875.51 is: 139,975.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,611.51 : 157,475.21 = 93,875.51 : x
  2. Step 2: Convert to fraction form
    105,611.51/157,475.21 = 93,875.51/x
  3. Step 3: Cross multiply
    105,611.51x = 157,475.21 × 93,875.51
  4. Step 4: Simplify right side
    105,611.51x = 14,783,065,181.73
  5. Step 5: Solve for x
    x = 14,783,065,181.73/105,611.51
  6. Step 6: Final answer
    x = 139,975.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.