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Finding the Fourth Proportional to 128,357.40, 192,536.10 and 97,253.40

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Solution

The fourth proportional to 128,357.40, 192,536.10 and 97,253.40 is: 145,880.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,357.40 : 192,536.10 = 97,253.40 : x
  2. Step 2: Convert to fraction form
    128,357.40/192,536.10 = 97,253.40/x
  3. Step 3: Cross multiply
    128,357.40x = 192,536.10 × 97,253.40
  4. Step 4: Simplify right side
    128,357.40x = 18,724,790,347.74
  5. Step 5: Solve for x
    x = 18,724,790,347.74/128,357.40
  6. Step 6: Final answer
    x = 145,880.10

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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.