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Finding the Fourth Proportional to 640,123.92, 953,393.81 and 637,030.19

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Solution

The fourth proportional to 640,123.92, 953,393.81 and 637,030.19 is: 948,786.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,123.92 : 953,393.81 = 637,030.19 : x
  2. Step 2: Convert to fraction form
    640,123.92/953,393.81 = 637,030.19/x
  3. Step 3: Cross multiply
    640,123.92x = 953,393.81 × 637,030.19
  4. Step 4: Simplify right side
    640,123.92x = 607,340,631,977.00
  5. Step 5: Solve for x
    x = 607,340,631,977.00/640,123.92
  6. Step 6: Final answer
    x = 948,786.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.