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Finding the Fourth Proportional to 538,947.70, 808,421.55 and 183,973.30

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Solution

The fourth proportional to 538,947.70, 808,421.55 and 183,973.30 is: 275,959.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,947.70 : 808,421.55 = 183,973.30 : x
  2. Step 2: Convert to fraction form
    538,947.70/808,421.55 = 183,973.30/x
  3. Step 3: Cross multiply
    538,947.70x = 808,421.55 × 183,973.30
  4. Step 4: Simplify right side
    538,947.70x = 148,727,980,344.62
  5. Step 5: Solve for x
    x = 148,727,980,344.62/538,947.70
  6. Step 6: Final answer
    x = 275,959.95

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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.