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Finding the Fourth Proportional to 638,607.72, 881,337.78 and 366,711.24

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Solution

The fourth proportional to 638,607.72, 881,337.78 and 366,711.24 is: 506,095.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,607.72 : 881,337.78 = 366,711.24 : x
  2. Step 2: Convert to fraction form
    638,607.72/881,337.78 = 366,711.24/x
  3. Step 3: Cross multiply
    638,607.72x = 881,337.78 × 366,711.24
  4. Step 4: Simplify right side
    638,607.72x = 323,196,470,162.65
  5. Step 5: Solve for x
    x = 323,196,470,162.65/638,607.72
  6. Step 6: Final answer
    x = 506,095.46

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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.