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Finding the Fourth Proportional to 70,497.16, 105,719.43 and 28,363.01

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Solution

The fourth proportional to 70,497.16, 105,719.43 and 28,363.01 is: 42,533.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,497.16 : 105,719.43 = 28,363.01 : x
  2. Step 2: Convert to fraction form
    70,497.16/105,719.43 = 28,363.01/x
  3. Step 3: Cross multiply
    70,497.16x = 105,719.43 × 28,363.01
  4. Step 4: Simplify right side
    70,497.16x = 2,998,521,263.18
  5. Step 5: Solve for x
    x = 2,998,521,263.18/70,497.16
  6. Step 6: Final answer
    x = 42,533.93

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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.