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Finding the Fourth Proportional to 127,897.40, 191,846.10 and 39,151.10

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Solution

The fourth proportional to 127,897.40, 191,846.10 and 39,151.10 is: 58,726.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,897.40 : 191,846.10 = 39,151.10 : x
  2. Step 2: Convert to fraction form
    127,897.40/191,846.10 = 39,151.10/x
  3. Step 3: Cross multiply
    127,897.40x = 191,846.10 × 39,151.10
  4. Step 4: Simplify right side
    127,897.40x = 7,510,985,845.71
  5. Step 5: Solve for x
    x = 7,510,985,845.71/127,897.40
  6. Step 6: Final answer
    x = 58,726.65

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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.