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Finding the Fourth Proportional to 58,645.40, 87,968.10 and 14,271.80

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Solution

The fourth proportional to 58,645.40, 87,968.10 and 14,271.80 is: 21,407.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,645.40 : 87,968.10 = 14,271.80 : x
  2. Step 2: Convert to fraction form
    58,645.40/87,968.10 = 14,271.80/x
  3. Step 3: Cross multiply
    58,645.40x = 87,968.10 × 14,271.80
  4. Step 4: Simplify right side
    58,645.40x = 1,255,463,129.58
  5. Step 5: Solve for x
    x = 1,255,463,129.58/58,645.40
  6. Step 6: Final answer
    x = 21,407.70

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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.