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Finding the Fourth Proportional to 139,698.04, 193,009.08 and 97,445.20

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Solution

The fourth proportional to 139,698.04, 193,009.08 and 97,445.20 is: 134,631.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,698.04 : 193,009.08 = 97,445.20 : x
  2. Step 2: Convert to fraction form
    139,698.04/193,009.08 = 97,445.20/x
  3. Step 3: Cross multiply
    139,698.04x = 193,009.08 × 97,445.20
  4. Step 4: Simplify right side
    139,698.04x = 18,807,808,402.42
  5. Step 5: Solve for x
    x = 18,807,808,402.42/139,698.04
  6. Step 6: Final answer
    x = 134,631.87

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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.