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Finding the Fourth Proportional to 125,275.54, 187,662.69 and 75,328.10

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Solution

The fourth proportional to 125,275.54, 187,662.69 and 75,328.10 is: 112,841.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,275.54 : 187,662.69 = 75,328.10 : x
  2. Step 2: Convert to fraction form
    125,275.54/187,662.69 = 75,328.10/x
  3. Step 3: Cross multiply
    125,275.54x = 187,662.69 × 75,328.10
  4. Step 4: Simplify right side
    125,275.54x = 14,136,273,878.59
  5. Step 5: Solve for x
    x = 14,136,273,878.59/125,275.54
  6. Step 6: Final answer
    x = 112,841.46

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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.