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Finding the Fourth Proportional to 912,731,058.90, 1,369,096,588.35 and 912,731,058.90

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Solution

The fourth proportional to 912,731,058.90, 1,369,096,588.35 and 912,731,058.90 is: 1,369,096,588.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,731,058.90 : 1,369,096,588.35 = 912,731,058.90 : x
  2. Step 2: Convert to fraction form
    912,731,058.90/1,369,096,588.35 = 912,731,058.90/x
  3. Step 3: Cross multiply
    912,731,058.90x = 1,369,096,588.35 × 912,731,058.90
  4. Step 4: Simplify right side
    912,731,058.90x = 1,249,616,978,821,072,896
  5. Step 5: Solve for x
    x = 1,249,616,978,821,072,896/912,731,058.90
  6. Step 6: Final answer
    x = 1,369,096,588.35

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Double scale
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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.