Home / 85,963,534.90-128,945,302.35-76,557,685.30

Finding the Fourth Proportional to 85,963,534.90, 128,945,302.35 and 76,557,685.30

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Solution

The fourth proportional to 85,963,534.90, 128,945,302.35 and 76,557,685.30 is: 114,836,527.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,963,534.90 : 128,945,302.35 = 76,557,685.30 : x
  2. Step 2: Convert to fraction form
    85,963,534.90/128,945,302.35 = 76,557,685.30/x
  3. Step 3: Cross multiply
    85,963,534.90x = 128,945,302.35 × 76,557,685.30
  4. Step 4: Simplify right side
    85,963,534.90x = 9,871,753,878,224,650
  5. Step 5: Solve for x
    x = 9,871,753,878,224,650/85,963,534.90
  6. Step 6: Final answer
    x = 114,836,527.95

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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.