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Finding the Fourth Proportional to 186,456.60, 257,303.30 and 113,980.87

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Solution

The fourth proportional to 186,456.60, 257,303.30 and 113,980.87 is: 157,289.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,456.60 : 257,303.30 = 113,980.87 : x
  2. Step 2: Convert to fraction form
    186,456.60/257,303.30 = 113,980.87/x
  3. Step 3: Cross multiply
    186,456.60x = 257,303.30 × 113,980.87
  4. Step 4: Simplify right side
    186,456.60x = 29,327,655,424.97
  5. Step 5: Solve for x
    x = 29,327,655,424.97/186,456.60
  6. Step 6: Final answer
    x = 157,289.45

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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.