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Finding the Fourth Proportional to 1,241,941,637, 1,713,849,415.62 and 685,012,723.40

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Solution

The fourth proportional to 1,241,941,637, 1,713,849,415.62 and 685,012,723.40 is: 945,300,987.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,241,941,637 : 1,713,849,415.62 = 685,012,723.40 : x
  2. Step 2: Convert to fraction form
    1,241,941,637/1,713,849,415.62 = 685,012,723.40/x
  3. Step 3: Cross multiply
    1,241,941,637x = 1,713,849,415.62 × 685,012,723.40
  4. Step 4: Simplify right side
    1,241,941,637x = 1,174,008,655,691,354,624
  5. Step 5: Solve for x
    x = 1,174,008,655,691,354,624/1,241,941,637
  6. Step 6: Final answer
    x = 945,300,987.35

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1.5x scale

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.