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Finding the Fourth Proportional to 186,656.81, 257,607.95 and 103,879.16

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Solution

The fourth proportional to 186,656.81, 257,607.95 and 103,879.16 is: 143,365.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,656.81 : 257,607.95 = 103,879.16 : x
  2. Step 2: Convert to fraction form
    186,656.81/257,607.95 = 103,879.16/x
  3. Step 3: Cross multiply
    186,656.81x = 257,607.95 × 103,879.16
  4. Step 4: Simplify right side
    186,656.81x = 26,760,096,613.92
  5. Step 5: Solve for x
    x = 26,760,096,613.92/186,656.81
  6. Step 6: Final answer
    x = 143,365.23

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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.