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Finding the Fourth Proportional to 62,756.60, 86,681.30 and 46,911.80

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Solution

The fourth proportional to 62,756.60, 86,681.30 and 46,911.80 is: 64,795.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,756.60 : 86,681.30 = 46,911.80 : x
  2. Step 2: Convert to fraction form
    62,756.60/86,681.30 = 46,911.80/x
  3. Step 3: Cross multiply
    62,756.60x = 86,681.30 × 46,911.80
  4. Step 4: Simplify right side
    62,756.60x = 4,066,375,809.34
  5. Step 5: Solve for x
    x = 4,066,375,809.34/62,756.60
  6. Step 6: Final answer
    x = 64,795.99

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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.