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Finding the Fourth Proportional to 525,666.40, 788,499.60 and 407,701.60

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Solution

The fourth proportional to 525,666.40, 788,499.60 and 407,701.60 is: 611,552.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,666.40 : 788,499.60 = 407,701.60 : x
  2. Step 2: Convert to fraction form
    525,666.40/788,499.60 = 407,701.60/x
  3. Step 3: Cross multiply
    525,666.40x = 788,499.60 × 407,701.60
  4. Step 4: Simplify right side
    525,666.40x = 321,472,548,519.36
  5. Step 5: Solve for x
    x = 321,472,548,519.36/525,666.40
  6. Step 6: Final answer
    x = 611,552.40

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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.