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Finding the Fourth Proportional to 186,303.70, 257,097.54 and 101,420.56

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Solution

The fourth proportional to 186,303.70, 257,097.54 and 101,420.56 is: 139,959.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,303.70 : 257,097.54 = 101,420.56 : x
  2. Step 2: Convert to fraction form
    186,303.70/257,097.54 = 101,420.56/x
  3. Step 3: Cross multiply
    186,303.70x = 257,097.54 × 101,420.56
  4. Step 4: Simplify right side
    186,303.70x = 26,074,976,481.42
  5. Step 5: Solve for x
    x = 26,074,976,481.42/186,303.70
  6. Step 6: Final answer
    x = 139,959.52

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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.