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Finding the Fourth Proportional to 47,858.55, 66,026.95 and 47,784.74

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Solution

The fourth proportional to 47,858.55, 66,026.95 and 47,784.74 is: 65,925.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,858.55 : 66,026.95 = 47,784.74 : x
  2. Step 2: Convert to fraction form
    47,858.55/66,026.95 = 47,784.74/x
  3. Step 3: Cross multiply
    47,858.55x = 66,026.95 × 47,784.74
  4. Step 4: Simplify right side
    47,858.55x = 3,155,080,189.15
  5. Step 5: Solve for x
    x = 3,155,080,189.15/47,858.55
  6. Step 6: Final answer
    x = 65,925.12

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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.