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Finding the Fourth Proportional to 865,628,391.04, 1,193,870,642.88 and 760,982,715.52

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Solution

The fourth proportional to 865,628,391.04, 1,193,870,642.88 and 760,982,715.52 is: 1,049,543,814.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,628,391.04 : 1,193,870,642.88 = 760,982,715.52 : x
  2. Step 2: Convert to fraction form
    865,628,391.04/1,193,870,642.88 = 760,982,715.52/x
  3. Step 3: Cross multiply
    865,628,391.04x = 1,193,870,642.88 × 760,982,715.52
  4. Step 4: Simplify right side
    865,628,391.04x = 908,514,923,798,430,592
  5. Step 5: Solve for x
    x = 908,514,923,798,430,592/865,628,391.04
  6. Step 6: Final answer
    x = 1,049,543,814.88

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.