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Finding the Fourth Proportional to 541,278.80, 811,918.20 and 525,726.80

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Solution

The fourth proportional to 541,278.80, 811,918.20 and 525,726.80 is: 788,590.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,278.80 : 811,918.20 = 525,726.80 : x
  2. Step 2: Convert to fraction form
    541,278.80/811,918.20 = 525,726.80/x
  3. Step 3: Cross multiply
    541,278.80x = 811,918.20 × 525,726.80
  4. Step 4: Simplify right side
    541,278.80x = 426,847,157,147.76
  5. Step 5: Solve for x
    x = 426,847,157,147.76/541,278.80
  6. Step 6: Final answer
    x = 788,590.20

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Half scale
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Double scale
Find fourth proportional to 541,279.80, 811,919.70 and 525,727.80
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.