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Finding the Fourth Proportional to 525,705.40, 788,558.10 and 457,276.60

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Solution

The fourth proportional to 525,705.40, 788,558.10 and 457,276.60 is: 685,914.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,705.40 : 788,558.10 = 457,276.60 : x
  2. Step 2: Convert to fraction form
    525,705.40/788,558.10 = 457,276.60/x
  3. Step 3: Cross multiply
    525,705.40x = 788,558.10 × 457,276.60
  4. Step 4: Simplify right side
    525,705.40x = 360,589,166,870.46
  5. Step 5: Solve for x
    x = 360,589,166,870.46/525,705.40
  6. Step 6: Final answer
    x = 685,914.90

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Similar ratio
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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.