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Finding the Fourth Proportional to 620,863.61, 930,516.66 and 265,460.45

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Solution

The fourth proportional to 620,863.61, 930,516.66 and 265,460.45 is: 397,857.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,863.61 : 930,516.66 = 265,460.45 : x
  2. Step 2: Convert to fraction form
    620,863.61/930,516.66 = 265,460.45/x
  3. Step 3: Cross multiply
    620,863.61x = 930,516.66 × 265,460.45
  4. Step 4: Simplify right side
    620,863.61x = 247,015,366,643.51
  5. Step 5: Solve for x
    x = 247,015,366,643.51/620,863.61
  6. Step 6: Final answer
    x = 397,857.70

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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.