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Finding the Fourth Proportional to 211,130.64, 316,712.52 and 61,373.16

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Solution

The fourth proportional to 211,130.64, 316,712.52 and 61,373.16 is: 92,064.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,130.64 : 316,712.52 = 61,373.16 : x
  2. Step 2: Convert to fraction form
    211,130.64/316,712.52 = 61,373.16/x
  3. Step 3: Cross multiply
    211,130.64x = 316,712.52 × 61,373.16
  4. Step 4: Simplify right side
    211,130.64x = 19,437,648,163.96
  5. Step 5: Solve for x
    x = 19,437,648,163.96/211,130.64
  6. Step 6: Final answer
    x = 92,064.55

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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.