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Finding the Fourth Proportional to 186,330.90, 257,128.92 and 101,447.76

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Solution

The fourth proportional to 186,330.90, 257,128.92 and 101,447.76 is: 139,993.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,330.90 : 257,128.92 = 101,447.76 : x
  2. Step 2: Convert to fraction form
    186,330.90/257,128.92 = 101,447.76/x
  3. Step 3: Cross multiply
    186,330.90x = 257,128.92 × 101,447.76
  4. Step 4: Simplify right side
    186,330.90x = 26,085,152,965.22
  5. Step 5: Solve for x
    x = 26,085,152,965.22/186,330.90
  6. Step 6: Final answer
    x = 139,993.70

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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.