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Finding the Fourth Proportional to 665,000.10, 997,500.15 and 578,394.90

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Solution

The fourth proportional to 665,000.10, 997,500.15 and 578,394.90 is: 867,592.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,000.10 : 997,500.15 = 578,394.90 : x
  2. Step 2: Convert to fraction form
    665,000.10/997,500.15 = 578,394.90/x
  3. Step 3: Cross multiply
    665,000.10x = 997,500.15 × 578,394.90
  4. Step 4: Simplify right side
    665,000.10x = 576,948,999,509.24
  5. Step 5: Solve for x
    x = 576,948,999,509.24/665,000.10
  6. Step 6: Final answer
    x = 867,592.35

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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.