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Finding the Fourth Proportional to 212,499.64, 318,675.10 and 62,700.16

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Solution

The fourth proportional to 212,499.64, 318,675.10 and 62,700.16 is: 94,028.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,499.64 : 318,675.10 = 62,700.16 : x
  2. Step 2: Convert to fraction form
    212,499.64/318,675.10 = 62,700.16/x
  3. Step 3: Cross multiply
    212,499.64x = 318,675.10 × 62,700.16
  4. Step 4: Simplify right side
    212,499.64x = 19,980,979,758.02
  5. Step 5: Solve for x
    x = 19,980,979,758.02/212,499.64
  6. Step 6: Final answer
    x = 94,028.30

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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.