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Finding the Fourth Proportional to 1,266,945.28, 1,748,412.64 and 723,070.24

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Solution

The fourth proportional to 1,266,945.28, 1,748,412.64 and 723,070.24 is: 997,853.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,945.28 : 1,748,412.64 = 723,070.24 : x
  2. Step 2: Convert to fraction form
    1,266,945.28/1,748,412.64 = 723,070.24/x
  3. Step 3: Cross multiply
    1,266,945.28x = 1,748,412.64 × 723,070.24
  4. Step 4: Simplify right side
    1,266,945.28x = 1,264,225,147,223.83
  5. Step 5: Solve for x
    x = 1,264,225,147,223.83/1,266,945.28
  6. Step 6: Final answer
    x = 997,853.00

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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.