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Finding the Fourth Proportional to 71,685.02, 98,952.75 and 47,802.98

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Solution

The fourth proportional to 71,685.02, 98,952.75 and 47,802.98 is: 65,986.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,685.02 : 98,952.75 = 47,802.98 : x
  2. Step 2: Convert to fraction form
    71,685.02/98,952.75 = 47,802.98/x
  3. Step 3: Cross multiply
    71,685.02x = 98,952.75 × 47,802.98
  4. Step 4: Simplify right side
    71,685.02x = 4,730,235,834.43
  5. Step 5: Solve for x
    x = 4,730,235,834.43/71,685.02
  6. Step 6: Final answer
    x = 65,986.40

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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.