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Finding the Fourth Proportional to 151,762.67, 209,432.80 and 83,779.73

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Solution

The fourth proportional to 151,762.67, 209,432.80 and 83,779.73 is: 115,616.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,762.67 : 209,432.80 = 83,779.73 : x
  2. Step 2: Convert to fraction form
    151,762.67/209,432.80 = 83,779.73/x
  3. Step 3: Cross multiply
    151,762.67x = 209,432.80 × 83,779.73
  4. Step 4: Simplify right side
    151,762.67x = 17,546,223,751.28
  5. Step 5: Solve for x
    x = 17,546,223,751.28/151,762.67
  6. Step 6: Final answer
    x = 115,616.20

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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.