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Finding the Fourth Proportional to 624,129.20, 936,193.80 and 617,908.40

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Solution

The fourth proportional to 624,129.20, 936,193.80 and 617,908.40 is: 926,862.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,129.20 : 936,193.80 = 617,908.40 : x
  2. Step 2: Convert to fraction form
    624,129.20/936,193.80 = 617,908.40/x
  3. Step 3: Cross multiply
    624,129.20x = 936,193.80 × 617,908.40
  4. Step 4: Simplify right side
    624,129.20x = 578,482,013,047.92
  5. Step 5: Solve for x
    x = 578,482,013,047.92/624,129.20
  6. Step 6: Final answer
    x = 926,862.60

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Double scale
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Similar ratio
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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.