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Finding the Fourth Proportional to 292,368, 438,554.16 and 70,752

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Solution

The fourth proportional to 292,368, 438,554.16 and 70,752 is: 106,128.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,368 : 438,554.16 = 70,752 : x
  2. Step 2: Convert to fraction form
    292,368/438,554.16 = 70,752/x
  3. Step 3: Cross multiply
    292,368x = 438,554.16 × 70,752
  4. Step 4: Simplify right side
    292,368x = 31,028,583,928.32
  5. Step 5: Solve for x
    x = 31,028,583,928.32/292,368
  6. Step 6: Final answer
    x = 106,128.52

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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.