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Finding the Fourth Proportional to 981,697,130.80, 1,472,545,696.20 and 981,697,130.80

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Solution

The fourth proportional to 981,697,130.80, 1,472,545,696.20 and 981,697,130.80 is: 1,472,545,696.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,697,130.80 : 1,472,545,696.20 = 981,697,130.80 : x
  2. Step 2: Convert to fraction form
    981,697,130.80/1,472,545,696.20 = 981,697,130.80/x
  3. Step 3: Cross multiply
    981,697,130.80x = 1,472,545,696.20 × 981,697,130.80
  4. Step 4: Simplify right side
    981,697,130.80x = 1,445,593,884,931,428,352
  5. Step 5: Solve for x
    x = 1,445,593,884,931,428,352/981,697,130.80
  6. Step 6: Final answer
    x = 1,472,545,696.20

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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.