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Finding the Fourth Proportional to 116,603.61, 160,911.66 and 65,616.13

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Solution

The fourth proportional to 116,603.61, 160,911.66 and 65,616.13 is: 90,549.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,603.61 : 160,911.66 = 65,616.13 : x
  2. Step 2: Convert to fraction form
    116,603.61/160,911.66 = 65,616.13/x
  3. Step 3: Cross multiply
    116,603.61x = 160,911.66 × 65,616.13
  4. Step 4: Simplify right side
    116,603.61x = 10,558,400,401.08
  5. Step 5: Solve for x
    x = 10,558,400,401.08/116,603.61
  6. Step 6: Final answer
    x = 90,549.52

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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.