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Finding the Fourth Proportional to 86,920,382,709.15, 130,380,574,063.72 and 86,920,382,709.15

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Solution

The fourth proportional to 86,920,382,709.15, 130,380,574,063.72 and 86,920,382,709.15 is: 130,380,574,063.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,920,382,709.15 : 130,380,574,063.72 = 86,920,382,709.15 : x
  2. Step 2: Convert to fraction form
    86,920,382,709.15/130,380,574,063.72 = 86,920,382,709.15/x
  3. Step 3: Cross multiply
    86,920,382,709.15x = 130,380,574,063.72 × 86,920,382,709.15
  4. Step 4: Simplify right side
    86,920,382,709.15x = 11,332,729,395,457,218,838,528
  5. Step 5: Solve for x
    x = 11,332,729,395,457,218,838,528/86,920,382,709.15
  6. Step 6: Final answer
    x = 130,380,574,063.72

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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.