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Finding the Fourth Proportional to 525,771.40, 788,657.10 and 357,809.80

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Solution

The fourth proportional to 525,771.40, 788,657.10 and 357,809.80 is: 536,714.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,771.40 : 788,657.10 = 357,809.80 : x
  2. Step 2: Convert to fraction form
    525,771.40/788,657.10 = 357,809.80/x
  3. Step 3: Cross multiply
    525,771.40x = 788,657.10 × 357,809.80
  4. Step 4: Simplify right side
    525,771.40x = 282,189,239,219.58
  5. Step 5: Solve for x
    x = 282,189,239,219.58/525,771.40
  6. Step 6: Final answer
    x = 536,714.70

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Double scale
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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.