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Finding the Fourth Proportional to 66,085.81, 91,202.93 and 37,405.51

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Solution

The fourth proportional to 66,085.81, 91,202.93 and 37,405.51 is: 51,622.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,085.81 : 91,202.93 = 37,405.51 : x
  2. Step 2: Convert to fraction form
    66,085.81/91,202.93 = 37,405.51/x
  3. Step 3: Cross multiply
    66,085.81x = 91,202.93 × 37,405.51
  4. Step 4: Simplify right side
    66,085.81x = 3,411,492,110.14
  5. Step 5: Solve for x
    x = 3,411,492,110.14/66,085.81
  6. Step 6: Final answer
    x = 51,622.16

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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.