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Finding the Fourth Proportional to 188,384.30, 260,038.68 and 124,742.60

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Solution

The fourth proportional to 188,384.30, 260,038.68 and 124,742.60 is: 172,190.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,384.30 : 260,038.68 = 124,742.60 : x
  2. Step 2: Convert to fraction form
    188,384.30/260,038.68 = 124,742.60/x
  3. Step 3: Cross multiply
    188,384.30x = 260,038.68 × 124,742.60
  4. Step 4: Simplify right side
    188,384.30x = 32,437,901,043.77
  5. Step 5: Solve for x
    x = 32,437,901,043.77/188,384.30
  6. Step 6: Final answer
    x = 172,190.04

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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.