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Finding the Fourth Proportional to 534,430,430.90, 801,645,646.35 and 534,430,430.90

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Solution

The fourth proportional to 534,430,430.90, 801,645,646.35 and 534,430,430.90 is: 801,645,646.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,430,430.90 : 801,645,646.35 = 534,430,430.90 : x
  2. Step 2: Convert to fraction form
    534,430,430.90/801,645,646.35 = 534,430,430.90/x
  3. Step 3: Cross multiply
    534,430,430.90x = 801,645,646.35 × 534,430,430.90
  4. Step 4: Simplify right side
    534,430,430.90x = 428,423,828,207,939,520
  5. Step 5: Solve for x
    x = 428,423,828,207,939,520/534,430,430.90
  6. Step 6: Final answer
    x = 801,645,646.35

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Double scale
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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.