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Finding the Fourth Proportional to 66,054,966.30, 99,082,449.45 and 38,774,328.30

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Solution

The fourth proportional to 66,054,966.30, 99,082,449.45 and 38,774,328.30 is: 58,161,492.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,054,966.30 : 99,082,449.45 = 38,774,328.30 : x
  2. Step 2: Convert to fraction form
    66,054,966.30/99,082,449.45 = 38,774,328.30/x
  3. Step 3: Cross multiply
    66,054,966.30x = 99,082,449.45 × 38,774,328.30
  4. Step 4: Simplify right side
    66,054,966.30x = 3,841,855,423,742,454.50
  5. Step 5: Solve for x
    x = 3,841,855,423,742,454.50/66,054,966.30
  6. Step 6: Final answer
    x = 58,161,492.45

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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.