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Finding the Fourth Proportional to 607,505.26, 911,386.84 and 208,038.78

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Solution

The fourth proportional to 607,505.26, 911,386.84 and 208,038.78 is: 312,102.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,505.26 : 911,386.84 = 208,038.78 : x
  2. Step 2: Convert to fraction form
    607,505.26/911,386.84 = 208,038.78/x
  3. Step 3: Cross multiply
    607,505.26x = 911,386.84 × 208,038.78
  4. Step 4: Simplify right side
    607,505.26x = 189,603,806,301.66
  5. Step 5: Solve for x
    x = 189,603,806,301.66/607,505.26
  6. Step 6: Final answer
    x = 312,102.33

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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.