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Finding the Fourth Proportional to 77,280.64, 106,596.48 and 60,484.48

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Solution

The fourth proportional to 77,280.64, 106,596.48 and 60,484.48 is: 83,428.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,280.64 : 106,596.48 = 60,484.48 : x
  2. Step 2: Convert to fraction form
    77,280.64/106,596.48 = 60,484.48/x
  3. Step 3: Cross multiply
    77,280.64x = 106,596.48 × 60,484.48
  4. Step 4: Simplify right side
    77,280.64x = 6,447,432,662.63
  5. Step 5: Solve for x
    x = 6,447,432,662.63/77,280.64
  6. Step 6: Final answer
    x = 83,428.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.