Home / 128,515,664,011.40-192,773,496,017.10-45,768,075,403.40

Finding the Fourth Proportional to 128,515,664,011.40, 192,773,496,017.10 and 45,768,075,403.40

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Solution

The fourth proportional to 128,515,664,011.40, 192,773,496,017.10 and 45,768,075,403.40 is: 68,652,113,105.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,515,664,011.40 : 192,773,496,017.10 = 45,768,075,403.40 : x
  2. Step 2: Convert to fraction form
    128,515,664,011.40/192,773,496,017.10 = 45,768,075,403.40/x
  3. Step 3: Cross multiply
    128,515,664,011.40x = 192,773,496,017.10 × 45,768,075,403.40
  4. Step 4: Simplify right side
    128,515,664,011.40x = 8,822,871,901,487,662,891,008
  5. Step 5: Solve for x
    x = 8,822,871,901,487,662,891,008/128,515,664,011.40
  6. Step 6: Final answer
    x = 68,652,113,105.10

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1.5x scale

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.