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Finding the Fourth Proportional to 111,813.80, 154,305.86 and 60,829.40

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Solution

The fourth proportional to 111,813.80, 154,305.86 and 60,829.40 is: 83,946.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,813.80 : 154,305.86 = 60,829.40 : x
  2. Step 2: Convert to fraction form
    111,813.80/154,305.86 = 60,829.40/x
  3. Step 3: Cross multiply
    111,813.80x = 154,305.86 × 60,829.40
  4. Step 4: Simplify right side
    111,813.80x = 9,386,332,880.28
  5. Step 5: Solve for x
    x = 9,386,332,880.28/111,813.80
  6. Step 6: Final answer
    x = 83,946.10

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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.