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Finding the Fourth Proportional to 369,134.40, 553,701.60 and 310,085.40

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Solution

The fourth proportional to 369,134.40, 553,701.60 and 310,085.40 is: 465,128.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,134.40 : 553,701.60 = 310,085.40 : x
  2. Step 2: Convert to fraction form
    369,134.40/553,701.60 = 310,085.40/x
  3. Step 3: Cross multiply
    369,134.40x = 553,701.60 × 310,085.40
  4. Step 4: Simplify right side
    369,134.40x = 171,694,782,116.64
  5. Step 5: Solve for x
    x = 171,694,782,116.64/369,134.40
  6. Step 6: Final answer
    x = 465,128.10

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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.