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Finding the Fourth Proportional to 116,191.64, 160,347.66 and 65,207.50

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Solution

The fourth proportional to 116,191.64, 160,347.66 and 65,207.50 is: 89,988.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,191.64 : 160,347.66 = 65,207.50 : x
  2. Step 2: Convert to fraction form
    116,191.64/160,347.66 = 65,207.50/x
  3. Step 3: Cross multiply
    116,191.64x = 160,347.66 × 65,207.50
  4. Step 4: Simplify right side
    116,191.64x = 10,455,868,911.67
  5. Step 5: Solve for x
    x = 10,455,868,911.67/116,191.64
  6. Step 6: Final answer
    x = 89,988.13

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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.