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Finding the Fourth Proportional to 211,607.59, 317,378.58 and 61,807.66

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Solution

The fourth proportional to 211,607.59, 317,378.58 and 61,807.66 is: 92,701.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,607.59 : 317,378.58 = 61,807.66 : x
  2. Step 2: Convert to fraction form
    211,607.59/317,378.58 = 61,807.66/x
  3. Step 3: Cross multiply
    211,607.59x = 317,378.58 × 61,807.66
  4. Step 4: Simplify right side
    211,607.59x = 19,616,426,512.53
  5. Step 5: Solve for x
    x = 19,616,426,512.53/211,607.59
  6. Step 6: Final answer
    x = 92,701.90

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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.