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Finding the Fourth Proportional to 358,653.20, 537,785.40 and 148,053.20

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Solution

The fourth proportional to 358,653.20, 537,785.40 and 148,053.20 is: 221,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,653.20 : 537,785.40 = 148,053.20 : x
  2. Step 2: Convert to fraction form
    358,653.20/537,785.40 = 148,053.20/x
  3. Step 3: Cross multiply
    358,653.20x = 537,785.40 × 148,053.20
  4. Step 4: Simplify right side
    358,653.20x = 79,620,849,383.28
  5. Step 5: Solve for x
    x = 79,620,849,383.28/358,653.20
  6. Step 6: Final answer
    x = 221,999.55

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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.