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Finding the Fourth Proportional to 127,409.58, 191,123.37 and 38,670.30

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Solution

The fourth proportional to 127,409.58, 191,123.37 and 38,670.30 is: 58,008.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,409.58 : 191,123.37 = 38,670.30 : x
  2. Step 2: Convert to fraction form
    127,409.58/191,123.37 = 38,670.30/x
  3. Step 3: Cross multiply
    127,409.58x = 191,123.37 × 38,670.30
  4. Step 4: Simplify right side
    127,409.58x = 7,390,798,054.91
  5. Step 5: Solve for x
    x = 7,390,798,054.91/127,409.58
  6. Step 6: Final answer
    x = 58,008.18

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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.