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Finding the Fourth Proportional to 287,444.95, 396,838.45 and 190,779.89

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Solution

The fourth proportional to 287,444.95, 396,838.45 and 190,779.89 is: 263,385.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,444.95 : 396,838.45 = 190,779.89 : x
  2. Step 2: Convert to fraction form
    287,444.95/396,838.45 = 190,779.89/x
  3. Step 3: Cross multiply
    287,444.95x = 396,838.45 × 190,779.89
  4. Step 4: Simplify right side
    287,444.95x = 75,708,795,838.77
  5. Step 5: Solve for x
    x = 75,708,795,838.77/287,444.95
  6. Step 6: Final answer
    x = 263,385.38

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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.