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Finding the Fourth Proportional to 64,326,430.20, 90,295,881 and 64,326,430.20

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Solution

The fourth proportional to 64,326,430.20, 90,295,881 and 64,326,430.20 is: 90,295,881

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,326,430.20 : 90,295,881 = 64,326,430.20 : x
  2. Step 2: Convert to fraction form
    64,326,430.20/90,295,881 = 64,326,430.20/x
  3. Step 3: Cross multiply
    64,326,430.20x = 90,295,881 × 64,326,430.20
  4. Step 4: Simplify right side
    64,326,430.20x = 5,808,411,686,494,006
  5. Step 5: Solve for x
    x = 5,808,411,686,494,006/64,326,430.20
  6. Step 6: Final answer
    x = 90,295,881

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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.