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Finding the Fourth Proportional to 368,793.45, 553,208.40 and 191,646.45

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Solution

The fourth proportional to 368,793.45, 553,208.40 and 191,646.45 is: 287,479.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,793.45 : 553,208.40 = 191,646.45 : x
  2. Step 2: Convert to fraction form
    368,793.45/553,208.40 = 191,646.45/x
  3. Step 3: Cross multiply
    368,793.45x = 553,208.40 × 191,646.45
  4. Step 4: Simplify right side
    368,793.45x = 106,020,425,970.18
  5. Step 5: Solve for x
    x = 106,020,425,970.18/368,793.45
  6. Step 6: Final answer
    x = 287,479.15

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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.