Home / 85,824,293.40-128,736,440.10-76,418,443.80

Finding the Fourth Proportional to 85,824,293.40, 128,736,440.10 and 76,418,443.80

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Solution

The fourth proportional to 85,824,293.40, 128,736,440.10 and 76,418,443.80 is: 114,627,665.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,824,293.40 : 128,736,440.10 = 76,418,443.80 : x
  2. Step 2: Convert to fraction form
    85,824,293.40/128,736,440.10 = 76,418,443.80/x
  3. Step 3: Cross multiply
    85,824,293.40x = 128,736,440.10 × 76,418,443.80
  4. Step 4: Simplify right side
    85,824,293.40x = 9,837,838,412,793,916
  5. Step 5: Solve for x
    x = 9,837,838,412,793,916/85,824,293.40
  6. Step 6: Final answer
    x = 114,627,665.70

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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.