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Finding the Fourth Proportional to 116,628.81, 160,948.44 and 65,642.55

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Solution

The fourth proportional to 116,628.81, 160,948.44 and 65,642.55 is: 90,587.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,628.81 : 160,948.44 = 65,642.55 : x
  2. Step 2: Convert to fraction form
    116,628.81/160,948.44 = 65,642.55/x
  3. Step 3: Cross multiply
    116,628.81x = 160,948.44 × 65,642.55
  4. Step 4: Simplify right side
    116,628.81x = 10,565,066,020.12
  5. Step 5: Solve for x
    x = 10,565,066,020.12/116,628.81
  6. Step 6: Final answer
    x = 90,587.10

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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.