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Finding the Fourth Proportional to 125,518.59, 189,215.25 and 114,878.82

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Solution

The fourth proportional to 125,518.59, 189,215.25 and 114,878.82 is: 173,176.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,518.59 : 189,215.25 = 114,878.82 : x
  2. Step 2: Convert to fraction form
    125,518.59/189,215.25 = 114,878.82/x
  3. Step 3: Cross multiply
    125,518.59x = 189,215.25 × 114,878.82
  4. Step 4: Simplify right side
    125,518.59x = 21,736,824,646.01
  5. Step 5: Solve for x
    x = 21,736,824,646.01/125,518.59
  6. Step 6: Final answer
    x = 173,176.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.