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Finding the Fourth Proportional to 70,417.92, 105,080.91 and 62,940

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Solution

The fourth proportional to 70,417.92, 105,080.91 and 62,940 is: 93,922.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,417.92 : 105,080.91 = 62,940 : x
  2. Step 2: Convert to fraction form
    70,417.92/105,080.91 = 62,940/x
  3. Step 3: Cross multiply
    70,417.92x = 105,080.91 × 62,940
  4. Step 4: Simplify right side
    70,417.92x = 6,613,792,475.40
  5. Step 5: Solve for x
    x = 6,613,792,475.40/70,417.92
  6. Step 6: Final answer
    x = 93,922.01

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.