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Finding the Fourth Proportional to 125,216.58, 172,798.54 and 67,857.49

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Solution

The fourth proportional to 125,216.58, 172,798.54 and 67,857.49 is: 93,643.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,216.58 : 172,798.54 = 67,857.49 : x
  2. Step 2: Convert to fraction form
    125,216.58/172,798.54 = 67,857.49/x
  3. Step 3: Cross multiply
    125,216.58x = 172,798.54 × 67,857.49
  4. Step 4: Simplify right side
    125,216.58x = 11,725,675,200.06
  5. Step 5: Solve for x
    x = 11,725,675,200.06/125,216.58
  6. Step 6: Final answer
    x = 93,643.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.