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Finding the Fourth Proportional to 14,569.60, 21,859.80 and 5,810.80

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Solution

The fourth proportional to 14,569.60, 21,859.80 and 5,810.80 is: 8,718.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,569.60 : 21,859.80 = 5,810.80 : x
  2. Step 2: Convert to fraction form
    14,569.60/21,859.80 = 5,810.80/x
  3. Step 3: Cross multiply
    14,569.60x = 21,859.80 × 5,810.80
  4. Step 4: Simplify right side
    14,569.60x = 127,022,925.84
  5. Step 5: Solve for x
    x = 127,022,925.84/14,569.60
  6. Step 6: Final answer
    x = 8,718.35

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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.