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Finding the Fourth Proportional to 70,854.60, 97,790.10 and 53,830.92

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Solution

The fourth proportional to 70,854.60, 97,790.10 and 53,830.92 is: 74,294.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,854.60 : 97,790.10 = 53,830.92 : x
  2. Step 2: Convert to fraction form
    70,854.60/97,790.10 = 53,830.92/x
  3. Step 3: Cross multiply
    70,854.60x = 97,790.10 × 53,830.92
  4. Step 4: Simplify right side
    70,854.60x = 5,264,131,049.89
  5. Step 5: Solve for x
    x = 5,264,131,049.89/70,854.60
  6. Step 6: Final answer
    x = 74,294.84

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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.