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Finding the Fourth Proportional to 525,777.80, 788,666.70 and 385,809.80

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Solution

The fourth proportional to 525,777.80, 788,666.70 and 385,809.80 is: 578,714.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,777.80 : 788,666.70 = 385,809.80 : x
  2. Step 2: Convert to fraction form
    525,777.80/788,666.70 = 385,809.80/x
  3. Step 3: Cross multiply
    525,777.80x = 788,666.70 × 385,809.80
  4. Step 4: Simplify right side
    525,777.80x = 304,275,341,793.66
  5. Step 5: Solve for x
    x = 304,275,341,793.66/525,777.80
  6. Step 6: Final answer
    x = 578,714.70

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Similar ratio
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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.