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Finding the Fourth Proportional to 128,411.93, 192,663.32 and 57,327.95

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Solution

The fourth proportional to 128,411.93, 192,663.32 and 57,327.95 is: 86,012.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,411.93 : 192,663.32 = 57,327.95 : x
  2. Step 2: Convert to fraction form
    128,411.93/192,663.32 = 57,327.95/x
  3. Step 3: Cross multiply
    128,411.93x = 192,663.32 × 57,327.95
  4. Step 4: Simplify right side
    128,411.93x = 11,044,991,925.84
  5. Step 5: Solve for x
    x = 11,044,991,925.84/128,411.93
  6. Step 6: Final answer
    x = 86,012.20

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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.