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Finding the Fourth Proportional to 649,363.60, 974,045.40 and 578,861.20

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Solution

The fourth proportional to 649,363.60, 974,045.40 and 578,861.20 is: 868,291.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,363.60 : 974,045.40 = 578,861.20 : x
  2. Step 2: Convert to fraction form
    649,363.60/974,045.40 = 578,861.20/x
  3. Step 3: Cross multiply
    649,363.60x = 974,045.40 × 578,861.20
  4. Step 4: Simplify right side
    649,363.60x = 563,837,089,098.48
  5. Step 5: Solve for x
    x = 563,837,089,098.48/649,363.60
  6. Step 6: Final answer
    x = 868,291.80

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Half scale
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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.