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Finding the Fourth Proportional to 865,605.85, 1,194,597.93 and 478,412.95

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Solution

The fourth proportional to 865,605.85, 1,194,597.93 and 478,412.95 is: 660,244.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,605.85 : 1,194,597.93 = 478,412.95 : x
  2. Step 2: Convert to fraction form
    865,605.85/1,194,597.93 = 478,412.95/x
  3. Step 3: Cross multiply
    865,605.85x = 1,194,597.93 × 478,412.95
  4. Step 4: Simplify right side
    865,605.85x = 571,511,113,408.21
  5. Step 5: Solve for x
    x = 571,511,113,408.21/865,605.85
  6. Step 6: Final answer
    x = 660,244.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.