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Finding the Fourth Proportional to 541,208.80, 811,813.20 and 525,656.80

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Solution

The fourth proportional to 541,208.80, 811,813.20 and 525,656.80 is: 788,485.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,208.80 : 811,813.20 = 525,656.80 : x
  2. Step 2: Convert to fraction form
    541,208.80/811,813.20 = 525,656.80/x
  3. Step 3: Cross multiply
    541,208.80x = 811,813.20 × 525,656.80
  4. Step 4: Simplify right side
    541,208.80x = 426,735,128,909.76
  5. Step 5: Solve for x
    x = 426,735,128,909.76/541,208.80
  6. Step 6: Final answer
    x = 788,485.20

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Half scale
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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.