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Finding the Fourth Proportional to 19,145.76, 26,420.76 and 10,762.26

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Solution

The fourth proportional to 19,145.76, 26,420.76 and 10,762.26 is: 14,851.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,145.76 : 26,420.76 = 10,762.26 : x
  2. Step 2: Convert to fraction form
    19,145.76/26,420.76 = 10,762.26/x
  3. Step 3: Cross multiply
    19,145.76x = 26,420.76 × 10,762.26
  4. Step 4: Simplify right side
    19,145.76x = 284,347,088.52
  5. Step 5: Solve for x
    x = 284,347,088.52/19,145.76
  6. Step 6: Final answer
    x = 14,851.70

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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.