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Finding the Fourth Proportional to 677,437.96, 934,832.74 and 391,050.32

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Solution

The fourth proportional to 677,437.96, 934,832.74 and 391,050.32 is: 539,631.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,437.96 : 934,832.74 = 391,050.32 : x
  2. Step 2: Convert to fraction form
    677,437.96/934,832.74 = 391,050.32/x
  3. Step 3: Cross multiply
    677,437.96x = 934,832.74 × 391,050.32
  4. Step 4: Simplify right side
    677,437.96x = 365,566,642,123.48
  5. Step 5: Solve for x
    x = 365,566,642,123.48/677,437.96
  6. Step 6: Final answer
    x = 539,631.17

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Double scale
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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.