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Finding the Fourth Proportional to 648,729.80, 973,094.70 and 619,205.30

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Solution

The fourth proportional to 648,729.80, 973,094.70 and 619,205.30 is: 928,807.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,729.80 : 973,094.70 = 619,205.30 : x
  2. Step 2: Convert to fraction form
    648,729.80/973,094.70 = 619,205.30/x
  3. Step 3: Cross multiply
    648,729.80x = 973,094.70 × 619,205.30
  4. Step 4: Simplify right side
    648,729.80x = 602,545,395,641.91
  5. Step 5: Solve for x
    x = 602,545,395,641.91/648,729.80
  6. Step 6: Final answer
    x = 928,807.95

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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.