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Finding the Fourth Proportional to 211,698.32, 317,455.12 and 61,935.40

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Solution

The fourth proportional to 211,698.32, 317,455.12 and 61,935.40 is: 92,876.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,698.32 : 317,455.12 = 61,935.40 : x
  2. Step 2: Convert to fraction form
    211,698.32/317,455.12 = 61,935.40/x
  3. Step 3: Cross multiply
    211,698.32x = 317,455.12 × 61,935.40
  4. Step 4: Simplify right side
    211,698.32x = 19,661,709,839.25
  5. Step 5: Solve for x
    x = 19,661,709,839.25/211,698.32
  6. Step 6: Final answer
    x = 92,876.08

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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.