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Finding the Fourth Proportional to 66,300.90, 91,497.16 and 36,088.18

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Solution

The fourth proportional to 66,300.90, 91,497.16 and 36,088.18 is: 49,802.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,300.90 : 91,497.16 = 36,088.18 : x
  2. Step 2: Convert to fraction form
    66,300.90/91,497.16 = 36,088.18/x
  3. Step 3: Cross multiply
    66,300.90x = 91,497.16 × 36,088.18
  4. Step 4: Simplify right side
    66,300.90x = 3,301,965,795.94
  5. Step 5: Solve for x
    x = 3,301,965,795.94/66,300.90
  6. Step 6: Final answer
    x = 49,802.73

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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.