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Finding the Fourth Proportional to 624,145.80, 936,218.70 and 561,160.20

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Solution

The fourth proportional to 624,145.80, 936,218.70 and 561,160.20 is: 841,740.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,145.80 : 936,218.70 = 561,160.20 : x
  2. Step 2: Convert to fraction form
    624,145.80/936,218.70 = 561,160.20/x
  3. Step 3: Cross multiply
    624,145.80x = 936,218.70 × 561,160.20
  4. Step 4: Simplify right side
    624,145.80x = 525,368,672,935.74
  5. Step 5: Solve for x
    x = 525,368,672,935.74/624,145.80
  6. Step 6: Final answer
    x = 841,740.30

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Double scale
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Similar ratio
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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.