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Finding the Fourth Proportional to 128,030.52, 190,765.41 and 114,062.88

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Solution

The fourth proportional to 128,030.52, 190,765.41 and 114,062.88 is: 169,953.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,030.52 : 190,765.41 = 114,062.88 : x
  2. Step 2: Convert to fraction form
    128,030.52/190,765.41 = 114,062.88/x
  3. Step 3: Cross multiply
    128,030.52x = 190,765.41 × 114,062.88
  4. Step 4: Simplify right side
    128,030.52x = 21,759,252,068.98
  5. Step 5: Solve for x
    x = 21,759,252,068.98/128,030.52
  6. Step 6: Final answer
    x = 169,953.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.