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Finding the Fourth Proportional to 405,935.10, 608,902.65 and 156,617.10

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Solution

The fourth proportional to 405,935.10, 608,902.65 and 156,617.10 is: 234,925.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,935.10 : 608,902.65 = 156,617.10 : x
  2. Step 2: Convert to fraction form
    405,935.10/608,902.65 = 156,617.10/x
  3. Step 3: Cross multiply
    405,935.10x = 608,902.65 × 156,617.10
  4. Step 4: Simplify right side
    405,935.10x = 95,364,567,225.32
  5. Step 5: Solve for x
    x = 95,364,567,225.32/405,935.10
  6. Step 6: Final answer
    x = 234,925.65

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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.