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Finding the Fourth Proportional to 64,543.58, 89,045.25 and 47,588.15

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Solution

The fourth proportional to 64,543.58, 89,045.25 and 47,588.15 is: 65,653.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,543.58 : 89,045.25 = 47,588.15 : x
  2. Step 2: Convert to fraction form
    64,543.58/89,045.25 = 47,588.15/x
  3. Step 3: Cross multiply
    64,543.58x = 89,045.25 × 47,588.15
  4. Step 4: Simplify right side
    64,543.58x = 4,237,498,713.79
  5. Step 5: Solve for x
    x = 4,237,498,713.79/64,543.58
  6. Step 6: Final answer
    x = 65,653.30

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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.