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Finding the Fourth Proportional to 65,955.31, 91,139.03 and 48,019.18

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Solution

The fourth proportional to 65,955.31, 91,139.03 and 48,019.18 is: 66,354.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,955.31 : 91,139.03 = 48,019.18 : x
  2. Step 2: Convert to fraction form
    65,955.31/91,139.03 = 48,019.18/x
  3. Step 3: Cross multiply
    65,955.31x = 91,139.03 × 48,019.18
  4. Step 4: Simplify right side
    65,955.31x = 4,376,421,246.50
  5. Step 5: Solve for x
    x = 4,376,421,246.50/65,955.31
  6. Step 6: Final answer
    x = 66,354.34

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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.