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Finding the Fourth Proportional to 637,865,619.40, 895,430,514.20 and 637,865,619.40

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Solution

The fourth proportional to 637,865,619.40, 895,430,514.20 and 637,865,619.40 is: 895,430,514.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,865,619.40 : 895,430,514.20 = 637,865,619.40 : x
  2. Step 2: Convert to fraction form
    637,865,619.40/895,430,514.20 = 637,865,619.40/x
  3. Step 3: Cross multiply
    637,865,619.40x = 895,430,514.20 × 637,865,619.40
  4. Step 4: Simplify right side
    637,865,619.40x = 571,164,339,569,843,520
  5. Step 5: Solve for x
    x = 571,164,339,569,843,520/637,865,619.40
  6. Step 6: Final answer
    x = 895,430,514.20

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.