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Finding the Fourth Proportional to 1,406,541.99, 1,941,026.02 and 761,964.78

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Solution

The fourth proportional to 1,406,541.99, 1,941,026.02 and 761,964.78 is: 1,051,510.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,406,541.99 : 1,941,026.02 = 761,964.78 : x
  2. Step 2: Convert to fraction form
    1,406,541.99/1,941,026.02 = 761,964.78/x
  3. Step 3: Cross multiply
    1,406,541.99x = 1,941,026.02 × 761,964.78
  4. Step 4: Simplify right side
    1,406,541.99x = 1,478,993,464,303.58
  5. Step 5: Solve for x
    x = 1,478,993,464,303.58/1,406,541.99
  6. Step 6: Final answer
    x = 1,051,510.35

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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.