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Finding the Fourth Proportional to 112,554.40, 168,857.20 and 65,783.20

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Solution

The fourth proportional to 112,554.40, 168,857.20 and 65,783.20 is: 98,689.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,554.40 : 168,857.20 = 65,783.20 : x
  2. Step 2: Convert to fraction form
    112,554.40/168,857.20 = 65,783.20/x
  3. Step 3: Cross multiply
    112,554.40x = 168,857.20 × 65,783.20
  4. Step 4: Simplify right side
    112,554.40x = 11,107,966,959.04
  5. Step 5: Solve for x
    x = 11,107,966,959.04/112,554.40
  6. Step 6: Final answer
    x = 98,689.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.