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Finding the Fourth Proportional to 575,861.70, 863,792.55 and 386,904.90

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Solution

The fourth proportional to 575,861.70, 863,792.55 and 386,904.90 is: 580,357.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,861.70 : 863,792.55 = 386,904.90 : x
  2. Step 2: Convert to fraction form
    575,861.70/863,792.55 = 386,904.90/x
  3. Step 3: Cross multiply
    575,861.70x = 863,792.55 × 386,904.90
  4. Step 4: Simplify right side
    575,861.70x = 334,205,570,178.50
  5. Step 5: Solve for x
    x = 334,205,570,178.50/575,861.70
  6. Step 6: Final answer
    x = 580,357.35

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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.