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Finding the Fourth Proportional to 612,776.12, 845,618.81 and 340,838.15

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Solution

The fourth proportional to 612,776.12, 845,618.81 and 340,838.15 is: 470,349.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,776.12 : 845,618.81 = 340,838.15 : x
  2. Step 2: Convert to fraction form
    612,776.12/845,618.81 = 340,838.15/x
  3. Step 3: Cross multiply
    612,776.12x = 845,618.81 × 340,838.15
  4. Step 4: Simplify right side
    612,776.12x = 288,219,144,873.32
  5. Step 5: Solve for x
    x = 288,219,144,873.32/612,776.12
  6. Step 6: Final answer
    x = 470,349.84

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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.