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Finding the Fourth Proportional to 64,560.81, 89,068.95 and 47,605.17

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Solution

The fourth proportional to 64,560.81, 89,068.95 and 47,605.17 is: 65,676.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,560.81 : 89,068.95 = 47,605.17 : x
  2. Step 2: Convert to fraction form
    64,560.81/89,068.95 = 47,605.17/x
  3. Step 3: Cross multiply
    64,560.81x = 89,068.95 × 47,605.17
  4. Step 4: Simplify right side
    64,560.81x = 4,240,142,506.47
  5. Step 5: Solve for x
    x = 4,240,142,506.47/64,560.81
  6. Step 6: Final answer
    x = 65,676.72

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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.