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Finding the Fourth Proportional to 53,712, 80,572.32 and 16,776

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Solution

The fourth proportional to 53,712, 80,572.32 and 16,776 is: 25,165.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,712 : 80,572.32 = 16,776 : x
  2. Step 2: Convert to fraction form
    53,712/80,572.32 = 16,776/x
  3. Step 3: Cross multiply
    53,712x = 80,572.32 × 16,776
  4. Step 4: Simplify right side
    53,712x = 1,351,681,240.32
  5. Step 5: Solve for x
    x = 1,351,681,240.32/53,712
  6. Step 6: Final answer
    x = 25,165.35

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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.