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Finding the Fourth Proportional to 666,894.35, 920,062.98 and 437,578.22

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Solution

The fourth proportional to 666,894.35, 920,062.98 and 437,578.22 is: 603,693.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,894.35 : 920,062.98 = 437,578.22 : x
  2. Step 2: Convert to fraction form
    666,894.35/920,062.98 = 437,578.22/x
  3. Step 3: Cross multiply
    666,894.35x = 920,062.98 × 437,578.22
  4. Step 4: Simplify right side
    666,894.35x = 402,599,516,475.98
  5. Step 5: Solve for x
    x = 402,599,516,475.98/666,894.35
  6. Step 6: Final answer
    x = 603,693.10

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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.