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Finding the Fourth Proportional to 58,643.40, 87,965.28 and 14,270.16

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Solution

The fourth proportional to 58,643.40, 87,965.28 and 14,270.16 is: 21,405.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,643.40 : 87,965.28 = 14,270.16 : x
  2. Step 2: Convert to fraction form
    58,643.40/87,965.28 = 14,270.16/x
  3. Step 3: Cross multiply
    58,643.40x = 87,965.28 × 14,270.16
  4. Step 4: Simplify right side
    58,643.40x = 1,255,278,620.04
  5. Step 5: Solve for x
    x = 1,255,278,620.04/58,643.40
  6. Step 6: Final answer
    x = 21,405.28

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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.