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Finding the Fourth Proportional to 48,713.90, 73,070.85 and 21,065.90

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Solution

The fourth proportional to 48,713.90, 73,070.85 and 21,065.90 is: 31,598.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,713.90 : 73,070.85 = 21,065.90 : x
  2. Step 2: Convert to fraction form
    48,713.90/73,070.85 = 21,065.90/x
  3. Step 3: Cross multiply
    48,713.90x = 73,070.85 × 21,065.90
  4. Step 4: Simplify right side
    48,713.90x = 1,539,303,219.02
  5. Step 5: Solve for x
    x = 1,539,303,219.02/48,713.90
  6. Step 6: Final answer
    x = 31,598.85

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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.