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Finding the Fourth Proportional to 353,177.90, 530,002.40 and 128,538.27

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Solution

The fourth proportional to 353,177.90, 530,002.40 and 128,538.27 is: 192,893.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,177.90 : 530,002.40 = 128,538.27 : x
  2. Step 2: Convert to fraction form
    353,177.90/530,002.40 = 128,538.27/x
  3. Step 3: Cross multiply
    353,177.90x = 530,002.40 × 128,538.27
  4. Step 4: Simplify right side
    353,177.90x = 68,125,590,588.19
  5. Step 5: Solve for x
    x = 68,125,590,588.19/353,177.90
  6. Step 6: Final answer
    x = 192,893.13

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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.