Home / 85,960,809.60-128,941,214.40-80,917,814.40

Finding the Fourth Proportional to 85,960,809.60, 128,941,214.40 and 80,917,814.40

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Solution

The fourth proportional to 85,960,809.60, 128,941,214.40 and 80,917,814.40 is: 121,376,721.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,960,809.60 : 128,941,214.40 = 80,917,814.40 : x
  2. Step 2: Convert to fraction form
    85,960,809.60/128,941,214.40 = 80,917,814.40/x
  3. Step 3: Cross multiply
    85,960,809.60x = 128,941,214.40 × 80,917,814.40
  4. Step 4: Simplify right side
    85,960,809.60x = 10,433,641,255,329,808
  5. Step 5: Solve for x
    x = 10,433,641,255,329,808/85,960,809.60
  6. Step 6: Final answer
    x = 121,376,721.60

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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.