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Finding the Fourth Proportional to 326,641,205.70, 489,961,808.55 and 144,888,383.70

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Solution

The fourth proportional to 326,641,205.70, 489,961,808.55 and 144,888,383.70 is: 217,332,575.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,641,205.70 : 489,961,808.55 = 144,888,383.70 : x
  2. Step 2: Convert to fraction form
    326,641,205.70/489,961,808.55 = 144,888,383.70/x
  3. Step 3: Cross multiply
    326,641,205.70x = 489,961,808.55 × 144,888,383.70
  4. Step 4: Simplify right side
    326,641,205.70x = 70,989,774,515,538,336
  5. Step 5: Solve for x
    x = 70,989,774,515,538,336/326,641,205.70
  6. Step 6: Final answer
    x = 217,332,575.55

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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.