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Finding the Fourth Proportional to 648,734.80, 973,102.20 and 619,210.30

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Solution

The fourth proportional to 648,734.80, 973,102.20 and 619,210.30 is: 928,815.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,734.80 : 973,102.20 = 619,210.30 : x
  2. Step 2: Convert to fraction form
    648,734.80/973,102.20 = 619,210.30/x
  3. Step 3: Cross multiply
    648,734.80x = 973,102.20 × 619,210.30
  4. Step 4: Simplify right side
    648,734.80x = 602,554,905,192.66
  5. Step 5: Solve for x
    x = 602,554,905,192.66/648,734.80
  6. Step 6: Final answer
    x = 928,815.45

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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.