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Finding the Fourth Proportional to 14,927.70, 20,957.10 and 14,927.70

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Solution

The fourth proportional to 14,927.70, 20,957.10 and 14,927.70 is: 20,957.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,927.70 : 20,957.10 = 14,927.70 : x
  2. Step 2: Convert to fraction form
    14,927.70/20,957.10 = 14,927.70/x
  3. Step 3: Cross multiply
    14,927.70x = 20,957.10 × 14,927.70
  4. Step 4: Simplify right side
    14,927.70x = 312,841,301.67
  5. Step 5: Solve for x
    x = 312,841,301.67/14,927.70
  6. Step 6: Final answer
    x = 20,957.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.