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Finding the Fourth Proportional to 48,210.88, 72,367.44 and 42,700

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Solution

The fourth proportional to 48,210.88, 72,367.44 and 42,700 is: 64,095.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,210.88 : 72,367.44 = 42,700 : x
  2. Step 2: Convert to fraction form
    48,210.88/72,367.44 = 42,700/x
  3. Step 3: Cross multiply
    48,210.88x = 72,367.44 × 42,700
  4. Step 4: Simplify right side
    48,210.88x = 3,090,089,688
  5. Step 5: Solve for x
    x = 3,090,089,688/48,210.88
  6. Step 6: Final answer
    x = 64,095.28

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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.