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Finding the Fourth Proportional to 581,623.90, 816,139.70 and 581,623.90

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Solution

The fourth proportional to 581,623.90, 816,139.70 and 581,623.90 is: 816,139.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,623.90 : 816,139.70 = 581,623.90 : x
  2. Step 2: Convert to fraction form
    581,623.90/816,139.70 = 581,623.90/x
  3. Step 3: Cross multiply
    581,623.90x = 816,139.70 × 581,623.90
  4. Step 4: Simplify right side
    581,623.90x = 474,686,355,258.83
  5. Step 5: Solve for x
    x = 474,686,355,258.83/581,623.90
  6. Step 6: Final answer
    x = 816,139.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.