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Finding the Fourth Proportional to 111,283.39, 153,546.80 and 65,938.71

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Solution

The fourth proportional to 111,283.39, 153,546.80 and 65,938.71 is: 90,981.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,283.39 : 153,546.80 = 65,938.71 : x
  2. Step 2: Convert to fraction form
    111,283.39/153,546.80 = 65,938.71/x
  3. Step 3: Cross multiply
    111,283.39x = 153,546.80 × 65,938.71
  4. Step 4: Simplify right side
    111,283.39x = 10,124,677,916.63
  5. Step 5: Solve for x
    x = 10,124,677,916.63/111,283.39
  6. Step 6: Final answer
    x = 90,981.03

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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.