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Finding the Fourth Proportional to 101,588.98, 152,407.80 and 42,391.72

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Solution

The fourth proportional to 101,588.98, 152,407.80 and 42,391.72 is: 63,597.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,588.98 : 152,407.80 = 42,391.72 : x
  2. Step 2: Convert to fraction form
    101,588.98/152,407.80 = 42,391.72/x
  3. Step 3: Cross multiply
    101,588.98x = 152,407.80 × 42,391.72
  4. Step 4: Simplify right side
    101,588.98x = 6,460,828,783.42
  5. Step 5: Solve for x
    x = 6,460,828,783.42/101,588.98
  6. Step 6: Final answer
    x = 63,597.73

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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.