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Finding the Fourth Proportional to 685,545.66, 946,007.91 and 383,681.34

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Solution

The fourth proportional to 685,545.66, 946,007.91 and 383,681.34 is: 529,455.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,545.66 : 946,007.91 = 383,681.34 : x
  2. Step 2: Convert to fraction form
    685,545.66/946,007.91 = 383,681.34/x
  3. Step 3: Cross multiply
    685,545.66x = 946,007.91 × 383,681.34
  4. Step 4: Simplify right side
    685,545.66x = 362,965,582,559.40
  5. Step 5: Solve for x
    x = 362,965,582,559.40/685,545.66
  6. Step 6: Final answer
    x = 529,455.01

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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.