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Finding the Fourth Proportional to 528,365,534.80, 791,876,455.80 and 255,147,998.80

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Solution

The fourth proportional to 528,365,534.80, 791,876,455.80 and 255,147,998.80 is: 382,397,563.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,365,534.80 : 791,876,455.80 = 255,147,998.80 : x
  2. Step 2: Convert to fraction form
    528,365,534.80/791,876,455.80 = 255,147,998.80/x
  3. Step 3: Cross multiply
    528,365,534.80x = 791,876,455.80 × 255,147,998.80
  4. Step 4: Simplify right side
    528,365,534.80x = 202,045,692,994,206,656
  5. Step 5: Solve for x
    x = 202,045,692,994,206,656/528,365,534.80
  6. Step 6: Final answer
    x = 382,397,563.21

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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.