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Finding the Fourth Proportional to 623,903.40, 936,179.10 and 291,479.40

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Solution

The fourth proportional to 623,903.40, 936,179.10 and 291,479.40 is: 437,370.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,903.40 : 936,179.10 = 291,479.40 : x
  2. Step 2: Convert to fraction form
    623,903.40/936,179.10 = 291,479.40/x
  3. Step 3: Cross multiply
    623,903.40x = 936,179.10 × 291,479.40
  4. Step 4: Simplify right side
    623,903.40x = 272,876,922,360.54
  5. Step 5: Solve for x
    x = 272,876,922,360.54/623,903.40
  6. Step 6: Final answer
    x = 437,370.47

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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.