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Finding the Fourth Proportional to 61,386.60, 92,023.58 and 19,812.20

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Solution

The fourth proportional to 61,386.60, 92,023.58 and 19,812.20 is: 29,700.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,386.60 : 92,023.58 = 19,812.20 : x
  2. Step 2: Convert to fraction form
    61,386.60/92,023.58 = 19,812.20/x
  3. Step 3: Cross multiply
    61,386.60x = 92,023.58 × 19,812.20
  4. Step 4: Simplify right side
    61,386.60x = 1,823,189,571.68
  5. Step 5: Solve for x
    x = 1,823,189,571.68/61,386.60
  6. Step 6: Final answer
    x = 29,700.12

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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.