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Finding the Fourth Proportional to 42,383.76, 63,575.68 and 14,681.76

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Solution

The fourth proportional to 42,383.76, 63,575.68 and 14,681.76 is: 22,022.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,383.76 : 63,575.68 = 14,681.76 : x
  2. Step 2: Convert to fraction form
    42,383.76/63,575.68 = 14,681.76/x
  3. Step 3: Cross multiply
    42,383.76x = 63,575.68 × 14,681.76
  4. Step 4: Simplify right side
    42,383.76x = 933,402,875.60
  5. Step 5: Solve for x
    x = 933,402,875.60/42,383.76
  6. Step 6: Final answer
    x = 22,022.65

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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.