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Finding the Fourth Proportional to 60,842.64, 91,264.50 and 21,400.06

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Solution

The fourth proportional to 60,842.64, 91,264.50 and 21,400.06 is: 32,100.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,842.64 : 91,264.50 = 21,400.06 : x
  2. Step 2: Convert to fraction form
    60,842.64/91,264.50 = 21,400.06/x
  3. Step 3: Cross multiply
    60,842.64x = 91,264.50 × 21,400.06
  4. Step 4: Simplify right side
    60,842.64x = 1,953,065,775.87
  5. Step 5: Solve for x
    x = 1,953,065,775.87/60,842.64
  6. Step 6: Final answer
    x = 32,100.28

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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.