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Finding the Fourth Proportional to 619,235.20, 928,852.80 and 554,281.30

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Solution

The fourth proportional to 619,235.20, 928,852.80 and 554,281.30 is: 831,421.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,235.20 : 928,852.80 = 554,281.30 : x
  2. Step 2: Convert to fraction form
    619,235.20/928,852.80 = 554,281.30/x
  3. Step 3: Cross multiply
    619,235.20x = 928,852.80 × 554,281.30
  4. Step 4: Simplify right side
    619,235.20x = 514,845,737,492.64
  5. Step 5: Solve for x
    x = 514,845,737,492.64/619,235.20
  6. Step 6: Final answer
    x = 831,421.95

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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.