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Finding the Fourth Proportional to 125,880.40, 188,848.40 and 41,666.80

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Solution

The fourth proportional to 125,880.40, 188,848.40 and 41,666.80 is: 62,509.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,880.40 : 188,848.40 = 41,666.80 : x
  2. Step 2: Convert to fraction form
    125,880.40/188,848.40 = 41,666.80/x
  3. Step 3: Cross multiply
    125,880.40x = 188,848.40 × 41,666.80
  4. Step 4: Simplify right side
    125,880.40x = 7,868,708,513.12
  5. Step 5: Solve for x
    x = 7,868,708,513.12/125,880.40
  6. Step 6: Final answer
    x = 62,509.40

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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.