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Finding the Fourth Proportional to 218,804.40, 328,166.10 and 61,000.20

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Solution

The fourth proportional to 218,804.40, 328,166.10 and 61,000.20 is: 91,489.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,804.40 : 328,166.10 = 61,000.20 : x
  2. Step 2: Convert to fraction form
    218,804.40/328,166.10 = 61,000.20/x
  3. Step 3: Cross multiply
    218,804.40x = 328,166.10 × 61,000.20
  4. Step 4: Simplify right side
    218,804.40x = 20,018,197,733.22
  5. Step 5: Solve for x
    x = 20,018,197,733.22/218,804.40
  6. Step 6: Final answer
    x = 91,489.01

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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.