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Finding the Fourth Proportional to 139,526.42, 209,332.84 and 48,349.58

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Solution

The fourth proportional to 139,526.42, 209,332.84 and 48,349.58 is: 72,539.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,526.42 : 209,332.84 = 48,349.58 : x
  2. Step 2: Convert to fraction form
    139,526.42/209,332.84 = 48,349.58/x
  3. Step 3: Cross multiply
    139,526.42x = 209,332.84 × 48,349.58
  4. Step 4: Simplify right side
    139,526.42x = 10,121,154,894.21
  5. Step 5: Solve for x
    x = 10,121,154,894.21/139,526.42
  6. Step 6: Final answer
    x = 72,539.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.